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Subject: Re: [Homebrew_PCBs] Re: Newbie question

From: Dave <theschemer@...>
Date: 2007-11-23

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