The best Countersink I Have Ever Used - KEO 53512 Cobalt Steel Single-End Countersink
KEO 53512 Cobalt Steel Single-End Countersink, TiN Coated, 82 Degree Point Angle, Round Shank, 5/16" Shank Diameter, 1/2" Body Diameter This isn't a tool I use much for toy making, but I use it a lot for making jigs and special purpose fences. I have tried lots of countersinks for cheap ones from Harbor Freight to some expensive Bosch brand countersinks. Some cut better than others, but they all chattered. After trying one of these, the others went into the recycle bin. In some materials, this countersink will cut shavings not chips. You will get smooth, round countersinks. After using this one for a while, the others went into the recycle bin. I don't use it for metal, but you can use it for that. From the seller, " Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloy." The KEO 53512 Cobalt Steel Single-End Countersink co