With a frame like that you can support 2-3 ton on top? (Swag)
very nice and tidy work area...where did you learn all your skills Cal?
You are a veritable jackass
Well the tubes when multiplied (walls) are 1" thick steel. That will hold
way more than I'll ever load onto it. Tube steel in that orientation is wicked strong, so I don't envision any issues whatsoever. The top is 5/8" so it's pretty stable, even with the holes. They're 5/8" diameter to accommodate locating fixtures and other "jigs" I have and am making. A frame jig for this bike will be constructed for the single purpose, but usable for something else if needed.
I've got to fab up a fixture for mounting my tubing notcher so I can use my Mag Drill to notch the ends. It will make a cleaner hole than using a hole cutter bit on the twist drill. So the swing arm planned for this bike will get machined and set up at my shared shop space, then I'll bring it home with the frame in front of me and notch it, weld it, and verify fitment.
I stay in a lot of Holiday Inns, and during their unlimited breakfast bar each morning, I read up on how to do stuff. Keeps me out of jail and away from stealing hub caps.