• Re: 3D printing question - first layer, and filament age

    From scole@vintageapplemac@gmail.com to free.3d-printing,uk.d-i-y on Tue Feb 17 18:41:05 2026
    From Newsgroup: uk.d-i-y

    Andy Burns <usenet@andyburns.uk> wrote:
    scole wrote:

    Just a general heads up for yrCOall, there is now a newsgroup for 3D
    printing: free.3d-printing. ItrCOs available on Eternal September, and maybe >> elsewhere by now

    Thanks. It's not on NIN, but maybe they're not adding new groups since they've announced they'll be shutting down?


    Quite likely - although, theyrCOve still got 18 months or so to shutdown, right? Might be worth asking them if theyrCOd add it, itrCOs not like theyrCOre pulling the plug tomorrow.
    --
    STC
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  • From snipeco.2@snipeco.2@gmail.com (Sn!pe) to uk.d-i-y,free.3d-printing on Tue Feb 17 19:27:42 2026
    From Newsgroup: uk.d-i-y

    Andy Burns <usenet@andyburns.uk> wrote:

    scole wrote:

    Just a general heads up for y'all, there is now a newsgroup for 3D printing: free.3d-printing. It's available on Eternal September, and maybe elsewhere by now

    Thanks. It's not on NIN, but maybe they're not adding new groups since they've announced they'll be shutting down?

    The newgrouping was properly archived so any responsive NSP should
    have no qualms about creating it on their service if it's requested.
    --
    ^-^. Sn!pe, bird brain. My pet rock Gordon just is.

    This article has a Cribbage score of nineteen.
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  • From John Rumm@see.my.signature@nowhere.null to uk.d-i-y on Tue Feb 17 21:24:42 2026
    From Newsgroup: uk.d-i-y

    On 17/02/2026 09:39, No mail wrote:

    I've had a Prusa printer for quite a while, but have always struggled
    with first layer adhesion - so much so that I gave up. I need to design/ print a duct (as part of a shower room refresh) but the filament (PLA
    and PETG) is now several years old. Is this a concern, and how can I
    improve the first layer adhesion?

    Assuming the filament is dry, then much depends on the type of print
    sheet and the type of filament.

    PLA usually works on most sheets ok. PETG can stick too well on a smooth sheet, but can also lift at the corners on a textured one. (adding a
    "brim" in the slicer can help).

    I have had best results with a "satin" textured sheet - a good all round combination of adhesion, finished surface texture, and also ease of
    removal from the sheet once cooled. Only down side is the sheets are
    more expensive.
    --
    Cheers,

    John.

    /=================================================================\
    | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------|
    | John Rumm - john(at)internode(dot)co(dot)uk | \=================================================================/
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  • From not@not@telling.you.invalid (Computer Nerd Kev) to uk.d-i-y,free.3d-printing on Wed Feb 18 07:28:55 2026
    From Newsgroup: uk.d-i-y

    In free.3d-printing scole <vintageapplemac@gmail.com> wrote:
    No mail <nomail@aolbin.com> wrote:
    I've had a Prusa printer for quite a while, but have always struggled
    with first layer adhesion - so much so that I gave up. I need to
    design/print a duct (as part of a shower room refresh) but the filament
    (PLA and PETG) is now several years old. Is this a concern, and how can
    I improve the first layer adhesion?

    I've only printed with ABS, but I usually print with a raft to
    improve adheasion. Either the raft, or the first layer of a raftless
    print, is done with the extruder running full-speed and moving
    really slow so the plastic is smushed onto the (heated) build
    platform. I print on painter's tape, roughened up a little. It needs
    replacing after a few prints, and sometimes a print does go wrong
    because the tape itself gets unstuck. Surfaces/tapes designed
    specifically for 3D printing might work better, but I'm cheap (and
    got used to this method before they were available).
    --
    __ __
    #_ < |\| |< _#
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  • From Andy Burns@usenet@andyburns.uk to uk.d-i-y,free.3d-printing on Wed Feb 18 08:00:06 2026
    From Newsgroup: uk.d-i-y

    Sn!pe wrote:

    Andy Burns <usenet@andyburns.uk> wrote:

    scole wrote:

    Just a general heads up for y'all, there is now a newsgroup for 3D
    printing: free.3d-printing. It's available on Eternal September, and maybe >>> elsewhere by now

    Thanks. It's not on NIN, but maybe they're not adding new groups since
    they've announced they'll be shutting down?

    The newgrouping was properly archived so any responsive NSP should
    have no qualms about creating it on their service if it's requested.
    I've asked them ...

    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From vintageapplemac@vintageapplemac@gmail.com (scole) to uk.d-i-y,free.3d-printing on Wed Feb 18 09:35:58 2026
    From Newsgroup: uk.d-i-y

    In article <6994dd97@news.ausics.net>, not@telling.you.invalid (Computer
    Nerd Kev) wrote:
    I print on painter's tape, roughened up a little. It needs
    replacing after a few prints, and sometimes a print does go wrong
    because the tape itself gets unstuck. Surfaces/tapes designed
    specifically for 3D printing might work better, but I'm cheap (and
    got used to this method before they were available).

    Ooh, I've never heard of this method before... Just done some Googling on
    it and it looks like a great idea! I will give this a try, thanks!
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  • From No mail@nomail@aolbin.com to uk.d-i-y on Wed Feb 25 14:23:53 2026
    From Newsgroup: uk.d-i-y

    No mail wrote:
    I've had a Prusa printer for quite a while, but have always struggled
    with first layer adhesion - so much so that I gave up. I need to design/print a duct (as part of a shower room refresh) but the filament
    (PLA and PETG) is now several years old. Is this a concern, and how can
    I improve the first layer adhesion?

    Thanks for all the suggestions. I bought a (Creality) filament dryer
    after much research, and also the 3D Lac aerosol that was suggested. A
    large and quite complicated print in PETG is currently in progress and
    looking good so far - only another 26 hours to go!
    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From The Natural Philosopher@tnp@invalid.invalid to uk.d-i-y on Wed Feb 25 14:56:05 2026
    From Newsgroup: uk.d-i-y

    On 25/02/2026 14:23, No mail wrote:
    No mail wrote:
    I've had a Prusa printer for quite a while, but have always struggled
    with first layer adhesion - so much so that I gave up. I need to
    design/print a duct (as part of a shower room refresh) but the
    filament (PLA and PETG) is now several years old. Is this a concern,
    and how can I improve the first layer adhesion?

    Thanks for all the suggestions. I bought a (Creality) filament dryer
    after much research, and also the 3D Lac aerosol that was suggested. A
    large and quite complicated print in PETG is currently in progress and looking good so far - only another 26 hours to go!

    Oh my.
    Wish you luck
    --
    Gun Control: The law that ensures that only criminals have guns.

    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From No mail@nomail@aolbin.com to uk.d-i-y on Fri Feb 27 13:54:48 2026
    From Newsgroup: uk.d-i-y

    The Natural Philosopher wrote:
    On 25/02/2026 14:23, No mail wrote:
    No mail wrote:
    I've had a Prusa printer for quite a while, but have always struggled
    with first layer adhesion - so much so that I gave up. I need to
    design/print a duct (as part of a shower room refresh) but the
    filament (PLA and PETG) is now several years old. Is this a concern,
    and how can I improve the first layer adhesion?

    Thanks for all the suggestions. I bought a (Creality) filament dryer
    after much research, and also the 3D Lac aerosol that was suggested. A
    large and quite complicated print in PETG is currently in progress and
    looking good so far - only another 26 hours to go!

    Oh my.
    Wish you luck

    A 220x200x140 37 hour print has completed without problems. Currently a 249x120x21 5 hour print has an hour to go so has passed the critical
    stage. Neither of these would have been possible before so I can highly recommend a filament dryer and the 3dLac.
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