I scraped a boudler into a master square, here's my report

[Paul Alciatore]

I am glad you posted this. I have definitely learned from it.

This is a topic that is not often discussed. And real world experience with scraping stone is very limited. I would have thought it was not practical. So I would encourage you to write an article and submit it to George at Village Press. He is both our moderator and the editor for their three machinist oriented magazines. He is always looking for articles and I bet this one would be immediately placed in the queue for publication.

thanks, I'm glad. For years I've lurked around here in the shadows & benefited from everyone's experience. Never really felt like I had anything to contribute, now I do. just trying to pay it forward.

plus, ya'll can understand the value of something like this. Try explaining to a friend how accurate 0.0001" is & why you need it...i did, it was disappointing to say the least.

[Jammer Six]

How does the 3 plate method generate a right angle? Build three squares at once?

P.S. People who think there are no stupid questions haven't met my apprentice.