Best Mortise Drill Bit: Square Hole Hollow Chisel ...
2021-6-3u2002·u2002Basically, mortiser square drill bit is a drill bit that works inside a hollow chisel. A lot of force is needed to push the square chisel in the round hole. The cleanliness of the bottom is similar to Forstner bit. In general, square hole mortiser drill bits work well but they are tedious for large areas. Choosing Mortise Drill Bit
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