variable radius cutter

[C-Bag]

My current project is to do some metal forming so I had to make concave and convex pieces(anvil?foot?) to do the actual forming. Since it was going to be a process where I'd start out with a guestimate and then cut a tighter and tighter radius until I compensated for springback I decided I needed a way to make a repeatable and precise way to do it. I scored some 80/20 2020 10 series aluminum extrusion off the local Craigslist. So I used that and some rack and pinion's I got off ebay along with some 80/20 linear bearings. Along with the rotary table off my mill. I hope the pix will be self explanatory.

[Altair]

Nice setup C-bag. Easy to build and precise.

Al

[C-Bag]

Thanks Altair. 80/20 is the bomb for doing this kind of stuff.

I'm new to this forum but on other forums that seem to run the same software. So I thought the process to upload pix would be the same.....but it didn't seem to want to let me upload more than one pic. I was waiting to see if anybody even noticed this or wanted the other pix to see if I should give it another try for the different views and cutting convex and concave.

[C-Bag]

another try on the other pix

[kbalch]

Thanks C-Bag! I've added your Variable Radius Cutter to our Metalworking category, as well as to your builder page: C-Bag's Homemade Tools. Your receipt:

Variable Radius Cutter by C-Bag

tags: rack, radius, rotary table, pinion, cutter

[C-Bag]

Wow, thanks Ken, so does that mean I just post other projects to this forum and you transfer or just go to "my" homemade tools?

Sorry just a noob.

[kbalch]

Yep, any of your homemade tools that you post in the Homemade Tools subforum will be added to the site and your HomemadeTools.net builder page automatically updated.

Just start a new thread for each tool and we'll take it from there.

Non-tool items should be posted in the Not a Tool, but Homemade subforum.

We really appreciate your being part of the community!

Ken