Reply To: Checking a mitre square
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21 November 2017 at 5:30 am
#376377
One other method, which is only a variant of the others, is
First test that the square is good for square.
Then actually cut a square corner on a board and check it. Use your shooting board if you have to. You may already have a board with a true square corner.
Then knife a 45 line from your 90 degree square corner off both edges of your square corner. Start both knifeed lines at the same point.
If the combination square is true for 45, you will only have one knife line If it’s not true, you will have two knife lines diverging in a V.
And if you can’t tell which, it’s close enough.
- This reply was modified 6 years, 10 months ago by Larry Geib.