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Technology Stocks : AMD, ARMH, INTC, NVDA
AMD 32.05+3.5%Oct 21 3:59 PM EDT

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To: neolib who wrote (30719)6/15/2019 11:47:56 AM
From: rzborusaRead Replies (1) of 33432
 
A few years ago, 10 or 15, a few, I was experimenting with a waste oil burner and purchased a 0.010 carbide drill with a 1/8 shank to fit a die grinder collet. I was amazed that the company listed their smallest bit at 0.001. Even the 0.010 could only do a series of pecks gradually ...

I used a lathe with the die grinder mounted in the tool post and work piece chucked with the spindle locked. It would take quite some time to do one hole through 12 pcb layers otoh there could be quite a gang of bits in sync. Layers could be drilled individually. Copper wire with ball endo... My $0.02

>And what would via hole diameter be, and how are they made
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