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Forrester bits
Self feeding bits...forester bits a Little different...
What is a Forstner bit used for?
Forstner bits are guided by the wide outside rim of the bit, unlike most drill bits, which are guided by the tip. Because of that, they can be used along with a drill press to drill angled holes, holes that partially overlap, and holes on the edge of the material.
What is a self feeding bit?
The self-feed style forstner bits have a lead auger screw which will pull its way into the log and with multi spur saw teeth this bit will make safe, easy work of drilling holes. ... The self feed bits can only be used in a heavy-duty ½" hand drill, not in a drill press and come in 1", 1 ½", 2" & 3" sizes.