From Newsgroup: rec.crafts.metalworking

Thinking about Jim's question about wheels for his saw mill, and my
simplistic replies for brute forcing a solution it made me think about something I need to make at some point, and I was wondering. Who has a
heavy duty ring roller? How heavy of material can you roll with it. I
am thinking basic low carbon hot rolled or cold rolled steel. Probably
hot rolled. I don't have anything heavy enough for the material I am considering (and already have left over from other projects)

My alternative for my single application is to make some radius forming
dies for my hydraulic press. Then I could hot or cold form as needed.
20 ton (my bigger press) might not be enough for cold forming. I'd just
need to make two sets. Maybe one if I got lucky. One for testing
spring back, and one adjusted for that if necessary. I could CNC them
out of some 4140 laying out back.
--
Bob La Londe
CNC Molds N Stuff

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From Newsgroup: rec.crafts.metalworking

On 13/01/2026 18:42, Bob La Londe wrote:

Thinking about Jim's question about wheels for his saw mill, and my simplistic replies for brute forcing a solution it made me think about something I need to make at some point, and I was wondering.-a Who has
a heavy duty ring roller?-a How heavy of material can you roll with
it.-a I am thinking basic low carbon hot rolled or cold rolled steel.-a Probably hot rolled.-a I don't have anything heavy enough for the
material I am considering (and already have left over from other
projects)

My alternative for my single application is to make some radius
forming dies for my hydraulic press.-a Then I could hot or cold form as needed. 20 ton (my bigger press) might not be enough for cold
forming.-a I'd just need to make two sets.-a Maybe one if I got lucky.-a
One for testing spring back, and one adjusted for that if necessary.-a
I could CNC them out of some 4140 laying out back.

I suppose a basic question to start is what size and section type are
you thinking about. I've formed 25mmx 25mmx 3mm angle into a circular
ring about 550mm diameter using my fly press and a former which fitted
each side of the web so it bent the hard way, it required a bit of
tweeking to correct twist once done but that was easy enough to do using
a vice and a piece of bar with a L cutout to grip it. The fly press is nominally 5 long tons or tonne, bend radius was controlled by adjusting
the stroke, the former pressing in the centre between 2 lower support
pieces. Later parts were sent out to a specialised section bender that
had equipment to bend troublesome sections quite easily.

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From Newsgroup: rec.crafts.metalworking

"Bob La Londe" wrote in message news:10k63n6$6ksq$1@dont-email.me...

Thinking about Jim's question about wheels for his saw mill, and my
simplistic replies for brute forcing a solution it made me think about something I need to make at some point, and I was wondering. Who has a
heavy duty ring roller? How heavy of material can you roll with it. I
am thinking basic low carbon hot rolled or cold rolled steel. Probably
hot rolled. I don't have anything heavy enough for the material I am considering (and already have left over from other projects)

My alternative for my single application is to make some radius forming
dies for my hydraulic press. Then I could hot or cold form as needed.
20 ton (my bigger press) might not be enough for cold forming. I'd just
need to make two sets. Maybe one if I got lucky. One for testing
spring back, and one adjusted for that if necessary. I could CNC them
out of some 4140 laying out back.
Bob La Londe
-----------------------------------
I looked at the HF ring roller for making large steel wheels but wasn't convinced I needed it, or large steel wheels with rims within its limited capacity. I've made wheels from slices of 6" SS pipe with welded spokes and needle bearing hubs. Perhaps a larger one could be assembled from scrap
plates welded to the rough shape, hammered flat, and then CNC cut into
donuts with spokes and a hub at the cost of a month's membership at the
Maker Space. Bolting the donuts together would avoid weld distortion.

The donuts could be stepped to form the crown and then the steps ground
smooth enough by spinning the wheel with an angle grinder crossing
diagonally to both cut and turn. That's how I crowned the motorcycle front tire. The tensioner pressure gauge shows little variation as the wheels and blade move and I needed less than 15 minutes to adjust tracking.

https://cookssaw.com/parts/band-wheels/?

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