3 inch cope guide
thingiverse
Slip this on a 3" tube or pipe, draw around it, cut and then it will fit against another pipe of the same size for welding. You may have to scale this to fit, or just cut one side open so it slides over your pipe. STL and Fusion 360 files included.
Download Model from thingiverse
With this file you will be able to print 3 inch cope guide with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 3 inch cope guide.