Guys and gals, I have found myself many times without some way to measure or find an angle. I had this happen while bending the HS spars, setting hand plane blades in a honing guide, etc. There is a relative easy way to find an angle using a little math and a piece of cardboard. The process might look complicated but I assure you if you do it a couple of times it gets fast. I can do this in less than 2 minutes. This also works for an outside angle, just make your "flat area" up a bit from the bottom and draw your right triangle downward instead of up.
Perhaps there is an easier way to do this but this method has always served me well and is surprisingly accurate. Would be even better if you used metal!
Step 1 get some flat area (about 4-5 inches) and mark a 4-6" line next to it.
20171210_095448 by Jereme Carne, on Flickr
Step 2 decide on the angle you are interseted in and do some simple math.
20171210_095804 by Jereme Carne, on Flickr
Step 3 take the results from step 2 and mark it on the vertical line depicted on the right of the above picture. The results from step 2 represent the side of the triangle opposite the angle.
20171210_095743 by Jereme Carne, on Flickr
Step 4 draw a line (aka the hypotenuse of the triangle)
20171210_095907 by Jereme Carne, on Flickr
Step 5 cut out what is needed and enjoy your new tool.
angle finder by Jereme Carne, on Flickr
Perhaps there is an easier way to do this but this method has always served me well and is surprisingly accurate. Would be even better if you used metal!
Step 1 get some flat area (about 4-5 inches) and mark a 4-6" line next to it.
20171210_095448 by Jereme Carne, on Flickr
Step 2 decide on the angle you are interseted in and do some simple math.
20171210_095804 by Jereme Carne, on Flickr
Step 3 take the results from step 2 and mark it on the vertical line depicted on the right of the above picture. The results from step 2 represent the side of the triangle opposite the angle.
20171210_095743 by Jereme Carne, on Flickr
Step 4 draw a line (aka the hypotenuse of the triangle)
20171210_095907 by Jereme Carne, on Flickr
Step 5 cut out what is needed and enjoy your new tool.
angle finder by Jereme Carne, on Flickr
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