I am trying to machine some aluminum and it involves countersinking some holes. I have tried a variety of 3/4" countersinks and so far they all suck rocks. I tried the Vermont American single flute and it didn't want to cut. I next tried a Bosch and it chattered so badly even in wood as to be unusable. I have a Stanley 1/2" that works great but cannot find anyone that carries Stanley countersinks. Any suggestions for a multi flute countersink?
- posted
17 years ago