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I will go down to harbor freight and grab one.Actually I think these get a pretty good result at .0001 times the cost.
I started playing with the two angle notches. Some people call them chop saw notches, but I have a 48"x6" belt sander that I can take them down quickly with after cutting them off straight. I wrote an Excel spreadsheet that I put on my Android smart phone. I enter the tube sizes and the intersection angle and gives me the grind angles. I want to put some calculations in it next for rotation of the tube. If you have a compound angle, you don't need a fixture to dial in both angle in because it still is a single angle to the tube, just rotated. I want to enter both angles and have it give me a single intersection angle to notch too as well as the degrees of rotation of the tube.I have a 4 axis mini mill with stepper motors. I paid like $3500 for it. I would sell it for $2500. The steppers are not strong, but would easily move a plasma torch head around. I bought it for prototyping, but was disappointed in the feed rate I could run a 3/8" end mill through 3/16" aluminum.
Yea, that made sense to me. I have a check book for my angle / axis / stepper / notch / uh thinga magigiggy needs. If it helps i am "disappointed in the feed rate" for the check book as well.