Comments wanted on PCB prototyping idea.
Spehro Pefhany email (remove spam text)
At 08:38 PM 12/9/02 +0200, you wrote:
>This is a metric country. I use 1mm or 0.8mm drills. 1mm I can buy at any
>DIY shop, 0.8 is $pecial order.
Try the kind of supplier that feeds machine shops and such like.
I use KBC tools, which has HSS 0.80mm drills for about 45 cents US ea.
(the smallest sizes, 0.35mm and 0.30mm cost a lot more).
M.A. Ford solid carbide PCB drills with standard 0.125" shank for
collets are more, about $2.50 US. But two (because you might break
one rather than wear it out) of those costs about the
same as an envelope of 10 of the HSS bits.
I got a nice assortment of 50 solid carbide drills and mill bits and other
things (mostly smaller than 1mm) from another supplier for about $15, with
color-coded plastic collars and a storage box.
Unfortunately, the HSS small drills are usually only jobbers length below
about 1mm (or 3/64), rather than the preferable (IMHO) stubby screw machine
Spehro Pefhany --"it's the network..." "The Journey is the reward"
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