I would suggest to drill before etching. This way less chance of a snag
on the pad and pulling the copper off. Run the drill with a high speed
and drill slowly.
There are places you can order up small drill bits as well -
mcmaster.com for one.
Derek Koonce
DDK Interactive Consulting Services
On 10/17/2011 1:21 PM, pebo festus wrote:
>
> when i visit the dentist i ask for all his used drills, they make some
> quite small.
>
> ________________________________
> From: Chuck <c.knight@... <mailto:c.knight%40juno.com>>
> To: Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs%40yahoogroups.com>
> Sent: Saturday, October 15, 2011 8:13 PM
> Subject: [Homebrew_PCBs] VERY FIRST PCB -- SUCCESSFUL!!!
>
>
> I just made my very first PCB at home!!! Hooray!
>
> http://www.instructables.com/id/Easy-to-build-CNC-Mill-Stepper-Motor-and-Driver-ci/
> I made the "Easy Stepper" board from Instructables, and could not
> easily get etchant out where I live, so I used the toilet bowl
> cleaner/peroxide mix. Worked quite well, actually.
>
> And, I did it as LASER toner transfer, using magazine paper. Talk
> about low tech!
>
> Apparently it really ∗is∗ possible to make boards, at home, and
> affordably. Next step is going to be drilling them out.
>
> I have 1/16" drill bits that would fit my drill press, or my
> Dremel...and I have a 0.7mm solid carbide bit that fits either as
> well. My concern is runout and precision...carbide is very VERY
> brittle, and I have only one bit.
>
> Any hints for a first timer?
>
> THANKS!
>
> Chuck
>
> [Non-text portions of this message have been removed]
>
>
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