Pipe notching templates work exceedingly well (once you figure out printer scaling vagaries and measure multiple times) because you can just hack off what's mar

Pipe notching templates work exceedingly well (once you figure out printer scaling vagaries and measure multiple times) because you can just hack off what's marked on the outside of the pipe, and then take a grinding wheel to the inside angles until they fit flush with a sample pipe. But does anyone actually use a paper template to lay out dovetails?