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Q & A: Truing a Framing Square

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Q & A: Truing a Framing Square

 

Q:

I just inherited my grandpa’s framing square. It’s big and heavy and I’d like to use it but it isn’t square! How on earth can I fix it?

 

A:

Get yourself a hammer and a center punch. Then:

1.Draw a line on a straight-edged board (MDF works great) using the square.

2. Flip over the square and draw another line just to the right of the first.

3. If the lines diverge, peen the inside corner of the square with a hammer and center punch.

4. If the lines converge,peen the outside corner.

5. Repeat steps 1 through 4 until the lines are parallel.



To test a square, draw a line on an MDF sheet. Flip over the square and draw another line next to the first.

Click any image to view a larger version.



Peening the outside corner “closes” the square.



Peening the inside corner “opens” the square.




This story originally appeared in American Woodworker October 2000, issue #82.

October 2000, issue #82

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