10-18-2015, 05:42 PM
The annular cutters are best for short depth holes and ONLY for through holes as they make a slug, just as a hole saw would Very limiting. I've never felt constrained by using twist drills and stepping up on size as I get much over 1/2" diameter.
They are a good tool for repetitive work, as the cost is high per unit. I would use extreme caution on a lathe because the slug could get whipped out of a chuck at high speed. Even big spade drills that can push a thin disk as they break through can be dangerous.
Holding onto them is tricky too, as the most common brands have proprietary adaptation, requiring a special holder for your spindle.
They are a good tool for repetitive work, as the cost is high per unit. I would use extreme caution on a lathe because the slug could get whipped out of a chuck at high speed. Even big spade drills that can push a thin disk as they break through can be dangerous.
Holding onto them is tricky too, as the most common brands have proprietary adaptation, requiring a special holder for your spindle.