For components, 0.8mm, 1.1mm, 1.4mm covers most stuff, mostly 0.8mm.
As for carbide... if you have a (good) drill press, fine, if you are doing it by hand, I'd suggest starting with standard HSS bits, carbide is brittle, very easy to snap if you put any side-load on them.
On Sat, Sep 13, 2014 at 11:10 AM, alan00463@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
Getting ready to make my first PCB with through-hole parts. What diameter s of carbide drill bits do I need for drilling holes and how many?
Thanks, Allan