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.
jack
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.
jack
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).
My drillbits fit into the dremel without an extra adapter because the tail end of the bit is thick enough (about 3mm).
www.megatool.com
(Yeah, I know the name isn't very intuative for a small drill bit mfr
)
You need to order a minimum of 25 of each size, but they are really good bits. Very agressive carbide, nice finished holes.
(Take care to hold the board down tight on the drill press table, the bits may pull the board up, causintg the bit to snap)
-Dan
(Yeah, I know the name isn't very intuative for a small drill bit mfr
) You need to order a minimum of 25 of each size, but they are really good bits. Very agressive carbide, nice finished holes.
(Take care to hold the board down tight on the drill press table, the bits may pull the board up, causintg the bit to snap)
-Dan
You can also find them everywhere you find dremel accessories (Even www.amazon.com) :
Attachments
Just buy these....
http://woodworker.com/cgi-bin/FULLPRES.exe?PARTNUM=916-423
Drilling PCB's is what they were designed for....
http://woodworker.com/cgi-bin/FULLPRES.exe?PARTNUM=916-423
Drilling PCB's is what they were designed for....
Attachments
Check out http://www.smallparts.com/
They have high speed bits starting at .0059 inches (0.1499mm) and cobalt micro bits starting at .0019 inches (.05mm)
You really need their catalog, as the web site doesn't have any where close to the amount of stuff they carry.
They have high speed bits starting at .0059 inches (0.1499mm) and cobalt micro bits starting at .0019 inches (.05mm)
You really need their catalog, as the web site doesn't have any where close to the amount of stuff they carry.
Try www.micromark.com. They have both carbide and non-carbide bits in very small sizes. Be sure your chuck will hold the small ones. Also unless you enjoy cursing and frustration, do not use the carbide bitss with a hand held drill -- they will break if you even look cross-eyed at them. Check out the variety of small taps as well -- very handy for mounting components to heat sinks and other tasks.
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