• Wire brush in an oscillating tool

    From bp@bp@www.zefox.net to rec.crafts.metalworking on Tue Oct 28 22:26:24 2025
    From Newsgroup: rec.crafts.metalworking

    Has anybody tried mounting a small wire brush on an
    oscillating multi-tool for cleaning deeply-contoured
    or pitted surfaces?

    The inspiration comes from oscillating-head electric
    toothbrushes.

    I've looked on Amazon for wire brushes that fit oscillating
    tools and found nothing. There's one for a Sawzall, but that's
    long stroke, which defeats the purpose, and it's too big.

    I've given some thought to mounting a small drill chuck or pin
    vise on the tool I have, a Dremel MM35. The intent would be to
    use a small wire cup wheel. It doesn't look trivial, with cannibalizing
    a sanding pad mount being the least difficult starting point.

    It's hard to believe the idea hasn't been tried already.
    There's a Reddit thread here: https://www.reddit.com/r/Tools/comments/zi6hch/anyone_make_a_scrub_brush_attachment_for_an/
    but it died without resolution.

    Thanks for reading, and any ideas.

    bob prohaska

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  • From Carl@carl.ijamesXX@YYverizon.net to rec.crafts.metalworking on Wed Oct 29 15:43:33 2025
    From Newsgroup: rec.crafts.metalworking

    On 10/28/25 6:26 PM, bp@www.zefox.net wrote:
    Has anybody tried mounting a small wire brush on an
    oscillating multi-tool for cleaning deeply-contoured
    or pitted surfaces?

    The inspiration comes from oscillating-head electric
    toothbrushes.

    I've looked on Amazon for wire brushes that fit oscillating
    tools and found nothing. There's one for a Sawzall, but that's
    long stroke, which defeats the purpose, and it's too big.

    I've given some thought to mounting a small drill chuck or pin
    vise on the tool I have, a Dremel MM35. The intent would be to
    use a small wire cup wheel. It doesn't look trivial, with cannibalizing
    a sanding pad mount being the least difficult starting point.

    It's hard to believe the idea hasn't been tried already.
    There's a Reddit thread here: https://www.reddit.com/r/Tools/comments/zi6hch/anyone_make_a_scrub_brush_attachment_for_an/
    but it died without resolution.

    Thanks for reading, and any ideas.

    bob prohaska


    Could you zip-tie a wire brush to a jigsaw blade? Great use for a dull
    or broken blade :-). Shorter stroke than a sawzall but probably still
    too long for you.
    --
    Regards,
    Carl
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  • From Leon Fisk@lfiskgr@gmail.invalid to rec.crafts.metalworking on Wed Oct 29 15:54:08 2025
    From Newsgroup: rec.crafts.metalworking

    On Tue, 28 Oct 2025 22:26:24 -0000 (UTC)
    bp@www.zefox.net wrote:
    Has anybody tried mounting a small wire brush on an
    oscillating multi-tool for cleaning deeply-contoured
    or pitted surfaces?
    <snip>
    Curious, did a bit of searching in likely places for something like
    this and found nothing...
    IMO you'd need really short and stiff bristles. Otherwise they'd just
    wiggle back and forth but not on the surface involved. Also think
    there could be a weight problem. I've noticed that heavier
    attachments are usually short and somewhat centered at their tool
    attachment point. "Bits" that are longer are svelte and light weight.
    Think a brush would need quite a long stick-out to get enough
    movement for it to do muchEfn+N+A
    --
    Leon Fisk
    Grand Rapids MI
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  • From Bob La Londe@none@none.com99 to rec.crafts.metalworking on Wed Oct 29 13:03:50 2025
    From Newsgroup: rec.crafts.metalworking

    On 10/28/2025 3:26 PM, bp@www.zefox.net wrote:
    Has anybody tried mounting a small wire brush on an
    oscillating multi-tool for cleaning deeply-contoured
    or pitted surfaces?

    The inspiration comes from oscillating-head electric
    toothbrushes.

    I've looked on Amazon for wire brushes that fit oscillating
    tools and found nothing. There's one for a Sawzall, but that's
    long stroke, which defeats the purpose, and it's too big.

    I've given some thought to mounting a small drill chuck or pin
    vise on the tool I have, a Dremel MM35. The intent would be to
    use a small wire cup wheel. It doesn't look trivial, with cannibalizing
    a sanding pad mount being the least difficult starting point.

    It's hard to believe the idea hasn't been tried already.
    There's a Reddit thread here: https://www.reddit.com/r/Tools/comments/zi6hch/anyone_make_a_scrub_brush_attachment_for_an/
    but it died without resolution.

    Thanks for reading, and any ideas.

    bob prohaska



    I've been known to chuck up a gun cleaning brush in a cordless drill to
    clean running light sockets. I also have 1/8 shank brushes in other
    useful brush configurations for rotary hand pieces.

    I try not to over think it, and just use whatever I have. I recently
    used a tiny stainless rotary brush to clean up the heating element studs
    in my water distiller.
    --
    Bob La Londe
    CNC Molds N Stuff

    --
    This email has been checked for viruses by AVG antivirus software.
    www.avg.com
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  • From Jim Wilkins@muratlanne@gmail.com to rec.crafts.metalworking on Wed Oct 29 16:35:28 2025
    From Newsgroup: rec.crafts.metalworking

    "Bob La Londe" wrote in message news:10dtrv6$35oa2$1@dont-email.me...

    I've been known to chuck up a gun cleaning brush in a cordless drill to
    clean running light sockets. I also have 1/8 shank brushes in other
    useful brush configurations for rotary hand pieces.

    -----------------------------
    There's this, too expensive for the short life of a spun brush: https://www.mscdirect.com/product/details/88553599?

    That reminds me of a college prank, replace a light bulb with a pinch of
    steel wool. Briefly it gives light, heat, sound, and a shower of sparks. I didn't have to do much like that to deter others from pranking me with the usual lighter fluid squirted under the door and lit.

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  • From bp@bp@www.zefox.net to rec.crafts.metalworking on Wed Oct 29 23:42:03 2025
    From Newsgroup: rec.crafts.metalworking

    Leon Fisk <lfiskgr@gmail.invalid> wrote:
    On Tue, 28 Oct 2025 22:26:24 -0000 (UTC)
    bp@www.zefox.net wrote:

    Has anybody tried mounting a small wire brush on an
    oscillating multi-tool for cleaning deeply-contoured
    or pitted surfaces?
    <snip>

    Curious, did a bit of searching in likely places for something like
    this and found nothing...

    IMO you'd need really short and stiff bristles. Otherwise they'd just
    wiggle back and forth but not on the surface involved.

    On a not-smooth surface I suspect "the wiggle does the work" 8-)

    Imagine a rough surface with the brush moving continuously across it.
    The bristle tips will scrape over the high spots and leave the low spots untouched. Now imagine the brush reversing direction at the end of the
    stroke. The bristles straighten, then slope in reverse. While straightened, they're effectively longer and can probe into the low spots, rather like
    a needle scaler. On a rough surface, the reversal does the crevice cleaning while the stroke cleans the high spots. The area cleaned is probably no
    bigger than a bristle end, but with a fast oscillation that adds up.

    I was trying to clean a very compact stain out of a shirt and tried using
    an electric toothbrush. It worked surprisingly well, which set me to
    thinking about how oscillating bristles move in contact with a surface. Doubtless my mental picture is wrong in some respects, but it may be
    "right enough" to be useful.

    The motivation was my other question about painting rusty gutters.
    In that case a rotating wire brush will leave little or nothing to patch/paint. An oscillating brush that follows the surviving metal
    contours might leave enough behind to support a coating.

    I have an oscillating tool and am trying to come up with an easy way
    to fasten a wire brush to it. A cup brush seems most appropriate,
    all that's needed is some sort of interface to the drive flange.
    The forces on the brush are likely to be relatively small, just
    enough to wiggle the bristles. The connection has to be quite stiff
    to transmit the motion, but likely not very strong. Plastic might work.

    The fact that nothing is commercially available makes me wonder
    what I've got wrong.

    Thanks for writing!

    bob prohaska


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  • From Clare Snyder@clare@snyder.on.ca to rec.crafts.metalworking on Thu Oct 30 00:52:35 2025
    From Newsgroup: rec.crafts.metalworking

    On Wed, 29 Oct 2025 23:42:03 -0000 (UTC), bp@www.zefox.net wrote:

    Leon Fisk <lfiskgr@gmail.invalid> wrote:
    On Tue, 28 Oct 2025 22:26:24 -0000 (UTC)
    bp@www.zefox.net wrote:

    Has anybody tried mounting a small wire brush on an
    oscillating multi-tool for cleaning deeply-contoured
    or pitted surfaces?
    <snip>

    Curious, did a bit of searching in likely places for something like
    this and found nothing...

    IMO you'd need really short and stiff bristles. Otherwise they'd just
    wiggle back and forth but not on the surface involved.

    On a not-smooth surface I suspect "the wiggle does the work" 8-)

    Imagine a rough surface with the brush moving continuously across it.
    The bristle tips will scrape over the high spots and leave the low spots >untouched. Now imagine the brush reversing direction at the end of the >stroke. The bristles straighten, then slope in reverse. While straightened, >they're effectively longer and can probe into the low spots, rather like
    a needle scaler. On a rough surface, the reversal does the crevice cleaning >while the stroke cleans the high spots. The area cleaned is probably no >bigger than a bristle end, but with a fast oscillation that adds up.

    I was trying to clean a very compact stain out of a shirt and tried using
    an electric toothbrush. It worked surprisingly well, which set me to
    thinking about how oscillating bristles move in contact with a surface. >Doubtless my mental picture is wrong in some respects, but it may be
    "right enough" to be useful.

    The motivation was my other question about painting rusty gutters.
    In that case a rotating wire brush will leave little or nothing to >patch/paint. An oscillating brush that follows the surviving metal
    contours might leave enough behind to support a coating.

    I have an oscillating tool and am trying to come up with an easy way
    to fasten a wire brush to it. A cup brush seems most appropriate,
    all that's needed is some sort of interface to the drive flange.
    The forces on the brush are likely to be relatively small, just
    enough to wiggle the bristles. The connection has to be quite stiff
    to transmit the motion, but likely not very strong. Plastic might work.

    The fact that nothing is commercially available makes me wonder
    what I've got wrong.

    Thanks for writing!

    bob prohaska


    grab a little hand wire brush - one of those 1/2" by 2" or whatever
    brushes with a 4 to 6 inch handle - you know what I mean?? Cut off the
    handle and cut a slit lengthwise in the handle. Epoxy it to a a
    oscillator blade with the teeth ground off and give it a try.

    brush like 4067500 Carlisle. Google it.
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  • From Jim Wilkins@muratlanne@gmail.com to rec.crafts.metalworking on Thu Oct 30 07:30:25 2025
    From Newsgroup: rec.crafts.metalworking

    BP wrote in message news:10du8oa$3aeok$1@dont-email.me...

    The fact that nothing is commercially available makes me wonder
    what I've got wrong.
    ---------------------------------

    I've made brushes I couldn't find to buy. In addition to the old method of lashing the bristles to a stick they can be made by crimping them into flattened tubing, or twisting wires or rods together and then wedging them apart with a pointed tool to slide in bristles.

    My non-scratching metal chimney brush is the last, a 1/8" x 36" rod bent double and twisted, leaving an open loop at the bend. The bristles are nylon string trimmer cord inserted concave-up where a pointed punch forced clearance. The rod ends were bent into another loop for the pull weight. The bristles were trimmed to length by starting the brush into a chimney
    section, which centers it, and cutting them just outside the rim, slightly longer than the chimney ID. Since the bristles curve upward they are easy
    for the weight to pull down, important in subzero cold, and drag when the cable pulls up. It's held up well for 40 years of weekly use.

    The pull rope is 3/8" braided cotton which is easy on chapped hands.

    Much later I found a plastic bristle brush meant for insulated metal
    chimneys. It's fine on the end of a stiff rod but the friction is high and
    the same both ways unlike mine.

    The thread on my chimney cleaning rod is 1/2-20 but slightly oversized. The thread on the fiber brush is 5/8-18 and also oversized, 0.632" The lathe
    gave me an adapter. I think the flea market seller was disposing of the
    unused fiber brush cheaply because it didn't fit their cleaning rod.

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  • From bp@bp@www.zefox.net to rec.crafts.metalworking on Thu Oct 30 16:25:37 2025
    From Newsgroup: rec.crafts.metalworking

    Clare Snyder <clare@snyder.on.ca> wrote:

    grab a little hand wire brush - one of those 1/2" by 2" or whatever
    brushes with a 4 to 6 inch handle - you know what I mean?? Cut off the
    handle and cut a slit lengthwise in the handle. Epoxy it to a a
    oscillator blade with the teeth ground off and give it a try.

    brush like 4067500 Carlisle. Google it.

    There's one in my kitchen drawer 8-). I didn't consider slotting
    the plastic and using epoxy, but maybe it'll stick well enough for
    some initial experiments.

    I was really hoping somebody would know of a fixture, like a collet
    or chuck, that would mount on the oscillating tool's "chuck" and
    hold a quarter inch shaft. There are lots of small cup brushes with
    like-sized shanks that give the orientation needed to reach into the
    gutter bottom.

    The closest readily-available mounting jig is a sanding pad holder.
    The DeWalt pad holder on Amazon shows some promise:

    https://www.amazon.com/DEWALT-Dwa4200-Oscillating-Sanding-Pad/dp/B00FMHPMUY/ref=sr_1_1?dib=eyJ2IjoiMSJ9.VV_hPAWT51C9w8gZfyHpuorL9ow0szvar_Pbpk9ONV9eLFyP46E1JXqOcW7gzqhsS_V5LHni02c1bIAAh_2fM_4hU0ga3na9SWqi4LuCvrZyqM9vRsMOtxkNoRlTjYZaCAfKf_vKlAskFhSl1ib8QOD2STHGHWD8JA54C3uWMF9GYKTRuEJ_UsX_vOVSeDYg112c0QCQBu7D17aw0cKoKwUd0FTzHMda2PUP1sx07e4igYYQUJyvCdGiwMEFN73PcclAoeVFrw_geMpCnKLjS7vsv2j2_GOUHcMmA9pzaNU.u5tl9qfwkH1_SzHiCVVH-h03lrOYQXxzEFQ3WCwpNKI&dib_tag=se&keywords=dewalt%2Boscillating%2Bsanding&qid=1761839586&sr=8-1&th=1

    The use of screws makes it easier to adapt fixtures and extensions.
    However, some photos show 3 screws, others show 5. seems to me 5
    is likely to be better. Still, it'll need an extension to reach.

    Thanks for writing!

    bob prohaska

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  • From Jim Wilkins@muratlanne@gmail.com to rec.crafts.metalworking on Thu Oct 30 13:35:52 2025
    From Newsgroup: rec.crafts.metalworking

    BP wrote in message news:10e03i1$3qi17$1@dont-email.me...

    I was really hoping somebody would know of a fixture, like a collet
    or chuck, that would mount on the oscillating tool's "chuck" and
    hold a quarter inch shaft. There are lots of small cup brushes with
    like-sized shanks that give the orientation needed to reach into the
    gutter bottom.
    ---------------------------------------
    My HF right angle air grinder with a 2" fiber pad did a fine job removing paint and rust from the inside and outside of six 3" x 8' and four 4" x 8' steel channels, cleaned the leaky rims of the sawmill motorcycle wheel, and most recently scrubbed rust spots and scratches on the truck for
    refinishing. If the gutter has more than pinhole leaks it might tear off the thin weakened metal but that's useless anyway.

    They show a newer model that I don't know about. My older one is supposed to be dual action though it can be locked for high speed rotation with a washer that clamps onto the ball bearing outer race, or the twist-on pad mount.

    Their accessory kits didn't fit right so I cut a 1/4-20 x 3/4" spindle
    adapter that matched them. It's not hard to figure out.

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  • From bp@bp@www.zefox.net to rec.crafts.metalworking on Thu Oct 30 18:59:07 2025
    From Newsgroup: rec.crafts.metalworking

    Jim Wilkins <muratlanne@gmail.com> wrote:
    ---------------------------------------
    My HF right angle air grinder with a 2" fiber pad did a fine job removing paint and rust from the inside and outside of six 3" x 8' and four 4" x 8' steel channels, cleaned the leaky rims of the sawmill motorcycle wheel, and most recently scrubbed rust spots and scratches on the truck for refinishing. If the gutter has more than pinhole leaks it might tear off the thin weakened metal but that's useless anyway.


    I think the reversing action of an oscillating tool is critical to my
    purpose. Grinders are great, but they work by eroding the high spots to
    match the low. I need surface-conforming abrasion that cleans the low
    spots without excessive damage to whatever high spots survive. Sandblasting
    and needle scalers do something similar to what's needed. An oscillating
    wire brush is less violent than a needle scaler (which I don't have) and
    neater than abrasive blasting, which I also don't have and makes a huge
    mess in the bargain.

    In this case the state of the gutter is quite fragile; I'm fairly sure
    that any planing action will destroy it completely. If you think I'm
    grasping at straws trying to save a bit of rusted-out gutter, you're
    correct 8-), but I'm trying to learn something in the process.

    Thanks for writing!

    bob prohaska


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  • From Bob La Londe@none@none.com99 to rec.crafts.metalworking on Thu Oct 30 13:11:29 2025
    From Newsgroup: rec.crafts.metalworking

    On 10/29/2025 1:35 PM, Jim Wilkins wrote:
    "Bob La Londe"-a wrote in message news:10dtrv6$35oa2$1@dont-email.me...

    I've been known to chuck up a gun cleaning brush in a cordless drill to
    clean running light sockets.-a I also have 1/8 shank brushes in other
    useful brush configurations for rotary hand pieces.

    -----------------------------
    There's this, too expensive for the short life of a spun brush: https://www.mscdirect.com/product/details/88553599?

    That reminds me of a college prank, replace a light bulb with a pinch of steel wool. Briefly it gives light, heat, sound, and a shower of sparks.
    I didn't have to do much like that to deter others from pranking me with
    the usual lighter fluid squirted under the door and lit.



    https://www.harborfreight.com/stainless-steel-rotary-wire-wheel-and-brush-set-5-piece-71054.html

    They aren't super tough, but I've been using them for a while now. They aren't total garbage either.
    --
    Bob La Londe
    CNC Molds N Stuff

    --
    This email has been checked for viruses by AVG antivirus software.
    www.avg.com
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  • From Leon Fisk@lfiskgr@gmail.invalid to rec.crafts.metalworking on Thu Oct 30 17:10:08 2025
    From Newsgroup: rec.crafts.metalworking

    On Thu, 30 Oct 2025 18:59:07 -0000 (UTC)
    bp@www.zefox.net wrote:
    <snip>
    In this case the state of the gutter is quite fragile; I'm fairly sure
    that any planing action will destroy it completely. If you think I'm
    grasping at straws trying to save a bit of rusted-out gutter, you're
    correct 8-), but I'm trying to learn something in the process.
    I've eyed this stuff for sealing the gutters but the price always seems
    a bit much. I'd just brush the loose stuff out, maybe hit it with air
    hose or leaf blower and spray it onEfn+N+A
    Though if I had a larger section to do rather than a leak here and
    there I'd probably try it... https://www.amazon.com/Rust-Oleum-344713-Automotive-Spray-Paint/dp/B085WSKDBW/ Think this version is for cleaner, less rusty items: https://www.amazon.com/Rust-Oleum-265495-11-Ounce-Flexible-Sealant/dp/B00AGZ0MUW/
    --
    Leon Fisk
    Grand Rapids MI
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  • From Jim Wilkins@muratlanne@gmail.com to rec.crafts.metalworking on Sat Nov 1 06:39:29 2025
    From Newsgroup: rec.crafts.metalworking

    BP wrote in message news:10e0chr$3tv3i$1@dont-email.me...

    In this case the state of the gutter is quite fragile; I'm fairly sure
    that any planing action will destroy it completely. If you think I'm
    grasping at straws trying to save a bit of rusted-out gutter, you're
    correct 8-), but I'm trying to learn something in the process. -----------------------------------

    Gorilla tape lasts several years on holes in the hanging tarp walls of my woodsheds.

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  • From Jim Wilkins@muratlanne@gmail.com to rec.crafts.metalworking on Sat Nov 1 09:48:53 2025
    From Newsgroup: rec.crafts.metalworking

    "Jim Wilkins" wrote in message news:10e4o02$16h62$1@dont-email.me...

    Gorilla tape lasts several years on holes in the hanging tarp walls of my woodsheds.
    ---------------------
    The white gorilla tape I put over holes from falling acorns in a weathered plastic roof overhang last fall still looks new and the edges aren't
    peeling. I used white instead of clear to make it easier to identify and inspect.

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  • From bp@bp@www.zefox.net to rec.crafts.metalworking on Sun Nov 2 15:48:32 2025
    From Newsgroup: rec.crafts.metalworking

    Jim Wilkins <muratlanne@gmail.com> wrote:
    "Jim Wilkins" wrote in message news:10e4o02$16h62$1@dont-email.me...

    Gorilla tape lasts several years on holes in the hanging tarp walls of my woodsheds.
    ---------------------
    The white gorilla tape I put over holes from falling acorns in a weathered plastic roof overhang last fall still looks new and the edges aren't peeling. I used white instead of clear to make it easier to identify and inspect.

    Getting anything to stick to the inside of the gutter will require
    cleaning, which is apt to end in destruction unless done very gently.

    Do you think Gorilla Tape might stay put on the outside of the gutter?
    That might be worth a try in the short (this winter) term. There's a
    lot of sun exposure in the area, but that won't be much of an issue
    till spring.

    Thanks for writing!

    bob prohaska

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  • From Jim Wilkins@muratlanne@gmail.com to rec.crafts.metalworking on Sun Nov 2 13:03:14 2025
    From Newsgroup: rec.crafts.metalworking



    BP wrote in message news:10e7ugf$26shf$1@dont-email.me...

    Jim Wilkins <muratlanne@gmail.com> wrote:
    "Jim Wilkins" wrote in message news:10e4o02$16h62$1@dont-email.me...

    Gorilla tape lasts several years on holes in the hanging tarp walls of my woodsheds.
    ---------------------
    The white gorilla tape I put over holes from falling acorns in a weathered plastic roof overhang last fall still looks new and the edges aren't
    peeling. I used white instead of clear to make it easier to identify and inspect.

    Getting anything to stick to the inside of the gutter will require
    cleaning, which is apt to end in destruction unless done very gently.

    Do you think Gorilla Tape might stay put on the outside of the gutter?
    That might be worth a try in the short (this winter) term. There's a
    lot of sun exposure in the area, but that won't be much of an issue
    till spring.

    Thanks for writing!

    bob prohaska

    -----------------------------------
    I don't think it's wide enough if lengthwise, crosswise to grab the sides might work, if the back side is clean enough.

    If you have sheet metal equipment and skills you could form a fitted patch from flashing. I'm bending a new Z shaped trim strip for the doorsill carpet edge in my truck, on a 30" shear/brake/roll.

    At this point I'd be replacing that section, or the whole gutter. Any remaining solid areas might be useful later as patches.

    My version with stiffer shop-made hangers that the gutter lies in without being attached has lasted for years in New England weather, hurricanes and
    ice storms. Each hanger requires ladder placement but the gutter sections
    can be heaved onto the roof, slid down, dropped in and connected from one
    end. The sections run straight through the downspout Ys, with the stops removed. Water drains through a cutout in the bottom that's narrower than
    the scoop on a pole that cleans the gutters, from the ground. The ends are open to push out sticks and leaves.

    The downspouts are attached only at the bottom and held in place at the top
    by the spigot on the Y. They are easily removed from the ground to clear
    clogs of leaves, branches and acorns.

    A ladder stabilizer can be positioned to rest on the shingles to make gutter work more accessible and convenient.

    For extra security you can mount these under the ridge cap and tie down the top end of the ladder. I added them after shoveling an extra-heavy snowfall that was collapsing roofs. My snowapult that throws 30 feet could be another story. https://www.homedepot.com/p/Werner-Stainless-Steel-Permanent-D-Ring-Fall-Protection-Roof-Anchor-A230302W/318086043

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  • From Jim Wilkins@muratlanne@gmail.com to rec.crafts.metalworking on Mon Nov 3 15:13:28 2025
    From Newsgroup: rec.crafts.metalworking

    BP wrote in message news:10e0chr$3tv3i$1@dont-email.me...

    In this case the state of the gutter is quite fragile; I'm fairly sure
    that any planing action will destroy it completely. If you think I'm
    grasping at straws trying to save a bit of rusted-out gutter, you're
    correct 8-), but I'm trying to learn something in the process. ----------------------------

    I learned long ago that trying to save thin rusted metal is futile and counterproductive, so I grind the hole edges back to metal thick and strong enough to hold fasteners or weld to with a Dremel. Then I know how big to
    make the patch and where I can attach it.

    I'm doing this right now on my '91 truck. Rust spread around the rubber plug in a floor drain. So far I've ground the hole back to solid metal and traced the smoother-edged opening onto thin cardboard, to make a practice patch
    from cardboard or flashing that I can copy in thicker galvanized steel.

    The floor was flat at the plug but rust ate back into the stiffening ribs
    that the patch will have to be tightly fitted against to seal. That's not as difficult as making a flush-welded patch disappear on a curved fender rim
    that is exposed to view.

    Most of the floor and underside of the cab still hasn't rusted. For New England that's pretty good. LPS-3 helped underneath where the spray could reach.

    This is what the holes drained:
    https://clearclad.com/products/what-is-e-coat/

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  • From bp@bp@www.zefox.net to rec.crafts.metalworking on Tue Nov 4 03:33:11 2025
    From Newsgroup: rec.crafts.metalworking

    Jim Wilkins <muratlanne@gmail.com> wrote:

    At this point I'd be replacing that section, or the whole gutter. Any remaining solid areas might be useful later as patches.

    I finally climbed up for a hands-on look and found I was very
    wrong about the state of the gutter and the likely leak.

    The gutter is _not_ rusting through, and the leak appears
    to be at a seam a foot or two from where the drips were
    landing. The bumps I took to be rust blisters are just
    moss stuck to the gutter (convincingly near the point of
    drippage) and the seam, which looked crude but functional
    from the ground is clearly cracked in what looks like caulk.

    The gutter is rusty enough that I'll have to do some cleaning
    but fear of breaking it completely has largey subsided. It'll
    have to be cleaned some, but a conventional wire brush will
    do the job well enough for the immediate term. The idea of
    using roofing cement, perhaps thinned a little with mineral
    spirits, looks promising. Rain is expected by tomorrow night
    and I'd like to be done beforehand.

    Apologies for the wild goose chase to everyone who responded!
    I glanced at the problem, decided I understood the situation,
    and didn't check until much, much later.

    bob prohaska

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Snag@Snag_one@msn.com to rec.crafts.metalworking on Mon Nov 3 22:38:49 2025
    From Newsgroup: rec.crafts.metalworking

    On 11/3/2025 9:33 PM, bp@www.zefox.net wrote:
    Jim Wilkins <muratlanne@gmail.com> wrote:

    At this point I'd be replacing that section, or the whole gutter. Any
    remaining solid areas might be useful later as patches.

    I finally climbed up for a hands-on look and found I was very
    wrong about the state of the gutter and the likely leak.

    The gutter is _not_ rusting through, and the leak appears
    to be at a seam a foot or two from where the drips were
    landing. The bumps I took to be rust blisters are just
    moss stuck to the gutter (convincingly near the point of
    drippage) and the seam, which looked crude but functional
    from the ground is clearly cracked in what looks like caulk.

    The gutter is rusty enough that I'll have to do some cleaning
    but fear of breaking it completely has largey subsided. It'll
    have to be cleaned some, but a conventional wire brush will
    do the job well enough for the immediate term. The idea of
    using roofing cement, perhaps thinned a little with mineral
    spirits, looks promising. Rain is expected by tomorrow night
    and I'd like to be done beforehand.

    Apologies for the wild goose chase to everyone who responded!
    I glanced at the problem, decided I understood the situation,
    and didn't check until much, much later.

    bob prohaska


    Reinforce your patch by embedding some fiberglass drywall tape in the roofing cement .
    --
    Snag
    I appreciated foreign cultures more
    when they stayed foreign ...
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Clare Snyder@clare@snyder.on.ca to rec.crafts.metalworking on Tue Nov 4 00:56:30 2025
    From Newsgroup: rec.crafts.metalworking

    On Mon, 3 Nov 2025 22:38:49 -0600, Snag <Snag_one@msn.com> wrote:

    On 11/3/2025 9:33 PM, bp@www.zefox.net wrote:
    Jim Wilkins <muratlanne@gmail.com> wrote:

    At this point I'd be replacing that section, or the whole gutter. Any
    remaining solid areas might be useful later as patches.

    I finally climbed up for a hands-on look and found I was very
    wrong about the state of the gutter and the likely leak.

    The gutter is _not_ rusting through, and the leak appears
    to be at a seam a foot or two from where the drips were
    landing. The bumps I took to be rust blisters are just
    moss stuck to the gutter (convincingly near the point of
    drippage) and the seam, which looked crude but functional
    from the ground is clearly cracked in what looks like caulk.

    The gutter is rusty enough that I'll have to do some cleaning
    but fear of breaking it completely has largey subsided. It'll
    have to be cleaned some, but a conventional wire brush will
    do the job well enough for the immediate term. The idea of
    using roofing cement, perhaps thinned a little with mineral
    spirits, looks promising. Rain is expected by tomorrow night
    and I'd like to be done beforehand.

    Apologies for the wild goose chase to everyone who responded!
    I glanced at the problem, decided I understood the situation,
    and didn't check until much, much later.

    bob prohaska


    Reinforce your patch by embedding some fiberglass drywall tape in the
    roofing cement .
    or just use scraps of non-metallic window screen
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Jim Wilkins@muratlanne@gmail.com to rec.crafts.metalworking on Tue Nov 4 07:03:31 2025
    From Newsgroup: rec.crafts.metalworking

    BP wrote in message news:10ebs5n$3br62$1@dont-email.me...

    I finally climbed up for a hands-on look and found I was very
    wrong about the state of the gutter and the likely leak.

    The gutter is _not_ rusting through, and the leak appears
    to be at a seam a foot or two from where the drips were
    landing. The bumps I took to be rust blisters are just
    moss stuck to the gutter (convincingly near the point of
    drippage) and the seam, which looked crude but functional
    from the ground is clearly cracked in what looks like caulk. -------------------------------

    If only the rust on my vehicles was an illusion! The hole has been taped to keep critters out.

    I've had better long term results with silicone instead of acrylic caulk, where it doesn't need paint. Metal and plastic gutters change length with temperature more that the wood of the house and the joints must allow it unless the gutter is free to slide.

    Wood has among the lowest thermal expansion rates along the grain, and one
    of the highest across it. https://www.engineeringtoolbox.com/linear-expansion-coefficients-d_95.html

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From bp@bp@www.zefox.net to rec.crafts.metalworking on Tue Nov 4 21:14:40 2025
    From Newsgroup: rec.crafts.metalworking

    Snag <Snag_one@msn.com> wrote:
    On 11/3/2025 9:33 PM, bp@www.zefox.net wrote:
    Jim Wilkins <muratlanne@gmail.com> wrote:

    At this point I'd be replacing that section, or the whole gutter. Any
    remaining solid areas might be useful later as patches.

    I finally climbed up for a hands-on look and found I was very
    wrong about the state of the gutter and the likely leak.

    The gutter is _not_ rusting through, and the leak appears
    to be at a seam a foot or two from where the drips were
    landing. The bumps I took to be rust blisters are just
    moss stuck to the gutter (convincingly near the point of
    drippage) and the seam, which looked crude but functional
    from the ground is clearly cracked in what looks like caulk.

    The gutter is rusty enough that I'll have to do some cleaning
    but fear of breaking it completely has largey subsided. It'll
    have to be cleaned some, but a conventional wire brush will
    do the job well enough for the immediate term. The idea of
    using roofing cement, perhaps thinned a little with mineral
    spirits, looks promising. Rain is expected by tomorrow night
    and I'd like to be done beforehand.

    Apologies for the wild goose chase to everyone who responded!
    I glanced at the problem, decided I understood the situation,
    and didn't check until much, much later.

    bob prohaska


    Reinforce your patch by embedding some fiberglass drywall tape in the roofing cement .

    Great minds must think alike 8-)

    After a bit more cleaning it turned out there was a longitudinal
    crack in the gutter at what I guess was a decorative crease about
    half an inch above the bottom. The area looked somewhat odd from
    the ground, but I didn't recognize it as broken.

    Given the crack was a couple of feet long, I got some fiberglass
    ribbon, 4" wide and six feet long. After priming the wire-brushed
    inner surface with roofing cement cut to pourable consistency with
    "paint thinner substitute" I laid down the ribbon in the wet primer
    and worked more of the diluted cement into the fabric, somewhat in
    the manner of laying up fiberglass on a boat. The nice thing about
    cloth is that it's fairly limp, so it can be stuck to the contour
    of the metal by the "glue" and the air bubbles worked out.

    I somewhat doubt it's a waterproof patch, but if it slows the
    leak some I'll be satisfied. The gutter really should be replaced.
    If it needs rework, I think the cement can be re-softened with
    solvent and overcoated.

    As an aside, does anybody know what the difference is between
    paint thinner and "paint thinner substitute"? The "substitute"
    seems to work fine, AFAICT. Since I'm in California it's likely
    to do with either air pollution or toxic chemicals, but no explanation
    comes readily to hand.

    Thanks for writing,

    bob prohaska

    --- Synchronet 3.21a-Linux NewsLink 1.2