These cutters are really good - drilling big holes in mild steel is tedious work but fun to use. These aren't drills, they're more like milling cutters, but they're hollow. Large holes can be drilled very easily and quickly with a milling cutter or a drill. I believe the work must be securely fastened or there is a risk of it being damaged. I will never go back to regular bits larger than 3/8 inch.
Olson 80 Inch Blade FB14580DB-025
10 Review
πͺ Durable DEWALT DW3986C Portable Blade 3 Pack for Efficient Cutting
10 Review
Enhanced Cutting Efficiency with Olson FB23370DB 0 025 2 Inch Blade
10 Review
πͺ Bi-Metal Cutting Blades: Imachinist S933414 - Enhancing Precision and Performance
10 Review