Beerhippie
Well-known member
I picked this oddball up in a used tool box purchase last summer:

I had no idea just exactly what it was--a circle-cutting trammel made the most sense to me, but what for? Someone here at GJ suggested it was for a cutting torch.
Quite possible--but I very rarely use a cutting torch. I have a Hypertherm plasma cutter.
Mod time!
The "cup" at the end was a pretty close fit:

But it was too thick to allow my drag tip to contact the metal and just a tiny bit too tight to fit the tip.
I ground it down to the desired thickness, then drilled it out to 9/16", which is about a perfect fit. I left the lowest step, as it fit the narrow part of the drag tip already.

I found and drilled my center point, set the center tip to a shallower setting, then measured out my circle radius and:


A little better management of the cable and I'll have some pretty nice circle cuts. As it was, I kept getting snarled up and didn't get a smooth cut all the way around.
Repurposing a farm-built-from-scrap tool is strangely satisfying.
This "new" tool is going in my plasma cutter kit!

I had no idea just exactly what it was--a circle-cutting trammel made the most sense to me, but what for? Someone here at GJ suggested it was for a cutting torch.
Quite possible--but I very rarely use a cutting torch. I have a Hypertherm plasma cutter.
Mod time!
The "cup" at the end was a pretty close fit:

But it was too thick to allow my drag tip to contact the metal and just a tiny bit too tight to fit the tip.
I ground it down to the desired thickness, then drilled it out to 9/16", which is about a perfect fit. I left the lowest step, as it fit the narrow part of the drag tip already.

I found and drilled my center point, set the center tip to a shallower setting, then measured out my circle radius and:


A little better management of the cable and I'll have some pretty nice circle cuts. As it was, I kept getting snarled up and didn't get a smooth cut all the way around.
Repurposing a farm-built-from-scrap tool is strangely satisfying.
This "new" tool is going in my plasma cutter kit!

























