In a message dated 7/25/2006 6:21:37 A.M. Central Daylight Time,
lcdpublishing@... writes:
As the subject title says, I am looking for a source of them. Actually, I
really don't need a lot of them, I just would like to have enough to identify
all the drills I have (or will have) and use.
Most of the bits I have now already have the rings, but some don't.<<
Chris! Do I imagine correctly that you will have only one or two of each
size, and will hand-mark the ID-rings? Wow! Even my CNC PCB drill will BUST
commonly-used sizes often enough that it has proven VERY
economically-advantageous to buy-in those "reconditioned" boxes of 50 bits (JDR Microdevices,
etc), ALL of which have properly MARKED rings. You might buy a box of those, and
SAVE the rings off busted bits, for re-use. And SAVE the 1/8" shanks of the
busted bits! They can be used for regrinding into engraving bits, braze-on
"carbide edges" for specials you make, etc.
Yeah, if I had to depend on one or two of "popular sizes" (like #56, for
example), I'd be spending 70% of MY time waiting for delivery of the TWO
replacements!
I haven't needed a "professionally-did" PCB in so long, I don't even know if
they will accept "2X camera-ready" artwork for new work as always, or now
will accept ONLY whatever PCB-CAD layout "on-disk"! So, I haven't asked how
THEY buy-in their bits. Boxes of 100? How many sizes do they keep in stock?
Min. quantity of each size before reorder? Hmmm... I will have to try to
remember to ask, next time I need PTH or multi-layer!
Jan Rowland
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