QueticoBill wrote:Not suggesting buying one - since they seem to cost in the $10-20k range - but it seems a CNC bender will do this. But there are services.
PS - template and router and cut rubs from aluminum plate. Lots of ways to connect them across depending on other materials involved.
Philip wrote:This would do it for the arch your looking at.
https://www.zoro.com/heck-industries-tu ... /G6154251/
You would need to have a set of dies made for the type or metal you want to use. If it wasn't a square type of tube or flat bar.
aggie79 wrote:I'm curious why you want to move away from aluminum ribs. Is the reason to save weight? Or to have a thinner profile?
I'd echo previous posters, in that I consider a sandwich of 1/8" aluminum plate, 3/4" plywood, and 1/8" aluminum plate if you're wanting to do something different. If you're looking to do volume, you could have the aluminum sides CNC laser or water-jet cut.
QueticoBill wrote:It happened I found one not far from me in Lisle IL.
http://www.zemanmfg.com/cnc-tube-bending.html
I have bent metal like this with a manual machine -a 50s era Hossfeld - one of the neatest coolest pieces of machinery I've ever worked with - but no way I was good enough to make a group of matching ellipses.
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