Homebrew PCBs

rdheiliger wrote:
 >
 > If you are drilling by hand, even in a drill press, the carbide bits
 > will break pretty often. At the cost, they are not worth it. I use
 > just the High Speed steel bits, not the carbon steel. I also
 > resharpen the bits. Use a fine stone on a bench grinder (about 100
 > grit). Use a magnifier to look at the point angle and relief angle.
 > Look at a new bit and try to dulicate the angles. It may at first
 > seem imposible to sharpen bits that small but if you hold the bit
 > down and tword you with the flute paralell to the floor, and just
 > barely touch the bit to the wheel they come out good enough. I use
 > mostly #62 bits for the thru hole and 1/16 for things like terminal
 > strips.
 >
 > RD

Thanks for the input. I have sharpened many a drill but not too many 
small ones like these.
Dave