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J.Wesbrock wrote: When I shot Zwickey Deltas I used a bench top belt sander to put a straight edge on them before sharpening. Go slow so you don’t overheat the edge and ruin the temper and you should be fine.
Sound advice. In the testing I had an enormous number of arrows to sharpen, and many were the ‘old style’ Grizzly heads, which need a huge amount of work. I routinely did the initial sharpening on a belt grinder (one made for shaping/edging knife blades). I kept a large bucket of water right beside the grinder and cooled the head frequently during sharpening. Having water on the blade while sharpening also gave me an idea of how hot the blade was becoming. When the water evaporated off the blade it was time to re-dip the broadhead in the water. Be sure to use a LARGE bucket of water or the water becomes pretty warm after doing several broadheads.
Ed