Reply To: How square should a square be?
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Square is only as square as square needs to be… Sorry I had to play with a few words… I personally own several good quality squares due to my being a Machinist/Engineer. Tolerance is up to the user. How much is acceptable to you? Given all of the suggestions so far and if the surface you are grounding your square against is flat then I probably would look at replacing this square. You can get a cheap square that is pretty accurate or even make one for yourself. American Woodworker Magazine had a pretty good article on making squares a few months ago. I’ll dig out my copy when I get in the shop later today and post the issue and date.