On Mon, 29 Dec 2008 08:52:13 -0800 (PST), you wrote:
>
>I use 0.8mm for IC sockets, resistor and capacitor leads, and small
>transistor leads. For larger pins like power transistors, voltage
>regulators and the square pins of DIL header connectors, I use
>1.0mm. It might be useful, for some types of leads, to have a
>slightly larger drill available, maybe 1.2mm. And as others
>have said, go for the tungsten carbide drills, as they are hard
>enough to use on fibreglass PCBs. I use the type with a 3mm shank,
>and I use them in a collet-type chuck in a mini drill.
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