Review on 🔧 Advanced Bit System: Optimized Countersink for Woodworking Flooring by William Mathis

The drill itself is garbage! Each broke after less than 10 holes. It is not made of high enough quality steel and becomes brittle fairly quickly. However, since I really wanted the sink to be exactly the right size and guaranteed to fit the Cumaru dowels, I simply pre-drilled a good quality 1/8 bit in a regular drill press and then used a professional spade punch (included) in it Impact wrench to countersink my holes. I know it's an extra step, but considering how much these things cost, it's worth it. The description also states that the countersink is suitable for 350 holes. Yes No! I use a Cumaru which is a little less dense than an Ipe and I end up with about 150 holes in each.