Some tool blades are small enough to sharpen on a whetstone just as you would a knife. However, lawn mower blades and hedge clippers of decent size call for something a little heavier duty. Freese suggests investing in a small1 x 30 belt sander, severalsanding beltsof various grits, anda...
Most of the thrust required for drilling with a chisel point drill is used to extrude material in front of the chisel since the chisel can't cut. This can force the drill off line causing the hole to drift. Reducing the required thrust results in straighter holes. While 4 facet points re...