In a message dated 18-Apr-02 11:00:31 Central Daylight Time,
marble_h@... writes:
> I was thinking of
> useing a 1/16 bit but the machine I can use has a 3/32 as the
> smallest right now . I think that is way to big .I was thinking of
> useing a #55 dill size for the paths ( 1/16 is bigger I know ) and
> #60 for the mount points these may be to small any thoughts
John: In MY opinion, even 1/16" is much too big for MOST things, other than,
maybe, the leads of some TO-220 and TO-208 devices, or 2 W. (U.S. made!)
resistors, etc.
For "most leaded devices in the DIP-IC and ¼ W. R. range", #56 is small
enough that the gap between the lead and the pad - the space "flying solder"
must span - is acceptable, yet large enough to accept on up to, say, ½ W. R's
and "big capacitor leads", etc.
For some "tiny stuff" I have gone as small as #72, but this is really rare
and difficult. #60 ought to be as small as any hobbiest should ever have to
go. Remember: It is vastly easier to RE-DRILL with a larger bit than to
UN-DRILL with a smaller one!
Jan Rowland
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