Review on Powerful Blair BLR11091 Diameter Broach Rotabroach - Ultimate Cutting Efficiency by Josh Parson

If you're drilling holes and have used traditional hole saws, make the switch now, unless you're drilling holes in wood that don't require neatly finished edges. For holes in aluminum and plastics like acrylic and polycarbonate and other manufacturing applications, this is the cat's meow. After 30 years of using traditional hole saws and drill bits I can't say enough about them or regret not finding them 3 decades ago. Now we have small and large sets.