where to get teeny tiny drill bits? - diyAudio
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Old 25th July 2003, 04:31 AM   #1
cowanrg is offline cowanrg  United States
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Default where to get teeny tiny drill bits?

i need to widen a few holes in a PCB and im looking for really small drill bits for the job. i havent seen them at home depot or lowes, anyone know of a place online that carries them?
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Old 25th July 2003, 04:39 AM   #2
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You should be able to find PCB drill bits at electronic stores which sell components, PCBs, etc...

I can get them of varying degrees of tiny-ness for about $0.25 each locally.
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Old 25th July 2003, 04:42 AM   #3
cowanrg is offline cowanrg  United States
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do you think radioshack would have them?
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Old 25th July 2003, 04:50 AM   #4
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Radio shack does have some.

If you need really tiny holes, a dremel with a drill press is a good solution. I saw Costco has a complete accessory kit with some great tiny drill bits (among many other things) for little more than the 3 bit pack from RatShack.
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Old 25th July 2003, 04:52 AM   #5
SY is offline SY  United States
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If you can't find what you need locally, McMaster-Carr and MSC are the two logical online sources.
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Old 25th July 2003, 05:06 AM   #6
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a note to add...if you plan on using a regular drill....you can get a mandrel adaptor to fit the bits

DIRT®
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Old 25th July 2003, 05:23 AM   #7
Illusus is offline Illusus  Canada
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Also try hobby shops, especially ones that specialize in scale models and radio control air planes, they usually stock high quality, tiny bit sets made by excel/ xacto.
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Old 25th July 2003, 02:00 PM   #8
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Default Digikey

has both high speed steel bits and carbide bits -- the HSS ones down to a few mills in size -- cutting a hole smaller than wire-wrap wire. I think that I use 0.033 and 0.040 most frequently.

I've also used drillbitcity. There's also a place in Kenilworth NJ which carries them by the thousands !

a word of advise on carbide bits -- forget about the Dremel drill press set up -- it isn't precise enough when pushing through the material and the slight off-centeredness causes bits to break -- i now use the carbide bits on my mill (not yet outfitted for CNC), and the hss ones with the Dremel -- just throw the bits away when they become unsharp.

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Old 25th July 2003, 02:11 PM   #9
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I've found a dremel to be an excellent tool for drilling PCBs. I've drilled hundreds of holes with it. No drillpress was used either. I've only broken one or two bits but I've got a lot of them because they're very cheap.

My drillbits fit into the dremel without an extra adapter because the tail end of the bit is thick enough (about 3mm).
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Old 25th July 2003, 03:13 PM   #10
dhaen is offline dhaen  Europe
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Default Vague but true.....

Some used, but re-sharpened bits from PCB companys are advertised in various places at much reduced cost.

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