I bought 20 .8mm drill bits on eBay for something insane like $3. You have to wait the three weeks of course. Having drilled my first few boards with a cordless handyman-type drill, the 20+ year old dremel I now use is luxury. I rest the tip against the hole (lit from behind) then drag it to the centre then push.
Works far better than I ever thought you could do by hand.
PG
Sent from my phone, anything lewd or incomprehensible is probably autocorrect and not my fault.
----- Reply message -----
From: "tda7000" <
Tda7000@...>
To: <
Homebrew_PCBs@yahoogroups.com>
Subject: [Homebrew_PCBs] Re: VERY FIRST PCB -- SUCCESSFUL!!!
Date: Tue, Oct 18, 2011 5:41 pm
I've only had that problem when I chose drill sizes too large for pads which were simply too small and should have been larger.
It's more likely the drill will break toner off and cause problems when etching.
If you print out your pads with the drill hole, that part is etched anyway, so when you drill you are actually only drilling the substrate and not copper.
Just my observations at least!
--- In Homebrew_PCBs@yahoogroups.com, Derek <derek@...> wrote:
>
> 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]
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
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