Im cutting up some box tubeing for a frame , and am Zing the rear. I make the cuts at 221/2 degrees , makeing two 45s for the Z. My question is does anyone make a speed/T square that is set on 221/2 degress insteed of the 45 and 90s? I google but could not find any.
probably won't find one like that...but there are adjustable "squares" I think called protractors or something.
Just cut some scrap tubing 11 degees each, flip one over, check it with a standard and weld them together....make your own tool. When your finished with it, they make a good tool to hit your mother-in-law with if she gets mouthy.
harbor frieght has a steel protractor & some other angle finders I find useful. You might try your local Sears also
At the Vaughn Bros. shop, I have to maintain a qty of protractors. From 48" to 5". The square head 18" is a must for radius larger than 3". The 48" is a sheet rock protractor and works great for spanning gaps in a chassis that are not finished or tacked.
An adjustable try square is what you need for what you ask. I assume that you are doing the cuts with something other than a chop saw which can be adjusted to the required 22 1/2 dg. Make a guide out of a couple pieces of angle iron welded so one side fits against the iron so it can be clamped there. The other piece welded so the upright side can be used as a guide for the torch. If you select the right width angle, the tip nut can be rested on the top, holding the right cutting distance(1/8" from the end of the cones).For a plasma cutter, us a 1/4"x 1" flatstrap for the cutting guide. Most plasma rigs don't need a dragcup if using less than 40 amps, the tip can be drug directly on the metal. Either way, make a test cut, then measure the distance from the guide to the close edge of the kerf. This is your offset. Always set your guide to the offset on the save side of the line. Also measure the width of the kerf, it has to be added to the length of the drop. For instance, if your kerf width is 1/8" and your offset is 5/16", ( my cutter) set up as follows. If you need a piece 5' long (drop) and a piece for the z 11" long (save) mark your line at 5' 1/8" With the angle going longer on the piece. Set up your guide 5/16" back from the line on the save side and make the cuts. move down 11", again with the guide on the save side,make the cuts and voila, pieces the right length after trimming the second drop to length. Hope this helps.
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