Oversize square wanted

[rmwarren]

My initial thought is that is going to be a very 'spensive chunk of aluminum.

I could make multiple sizes out of one sheet of aluminum that I could pick up for less than $100. The fact that I could cut it to be a perfect 90 (versus adjusting it to be so) seems like a plus, but perhaps a slightly adjustable solution would make more sense. I will think about that.

Did you use a CNC machine or mill to make yours, or did you 'free-hand' it with a drill press and hand tools?

That is a good price, I need to shop around more. A 36" by 48" sheet of 1/4" 6061 would cost me $242 + shipping from Online Metals.

I made my T-square with hand tools, the screws are M6-12 and the holes in the other bar are 1/4"/6.35MM. Once adjusted and locked down I have never had to re-calibrate it.

Look forward to seeing what you come up with.

RMW