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There are occasions when you need a very large square for cutting plate or just lining something up. This is how you make a large take down square.

Material list.

1. 3' 3" piece of 1/4 by 1.5" flat bar, with center punch marks exactly 3' on center in the center of the bar. Drill and tap the center punch marks 5/16" thread.

2. 4' 3" piece of 1/4 by 1.5" flat bar, with center punch marks exactly 4' on center in the center of the bar. Drill a 5/16" hole in one end and drill and tap a 5/16" hole in the other end.

3. 5' 2" of 1/4 by 1" flat bar, with center punch marks exactly 5' on center in the center of the bar. Drill these marks 5/16".

4. Cut off 3 - 5/16" bolts so they don't stick out the bottom side and bolt together as shown below, you now have an accurate 3' by 4' square to use.

1485.attach

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Good tip. The typical 3-4-5 right triangle.
Carpenters use that to square up framing. Measure 3' down one side, 4' down the other and the diagonal between the points should be 5' to be square. Can also do any multiple like 6-8-10 or use inches or centimeters.

Another easy tip for square up a frame (given parallel sides are the same length) is to measure the diagonals and they should be the same.

Keep the tips coming! The simple solutions are sometimes the one's we forget!

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