Homebrew PCBs

I live in New Jersey and I run www.kleinbauer.com as a real
business Tax Number and all. Technically speaking mechanical etching
keeps me from having to file with the EPA. Every so often the state
sends me a letter asking what chemicals I use. Like I said I got a
super fund site near me. You guys can dump your chemicals down the
drain, I can't. I have already signed on the dotted line saying I
don't have chemicals here.

    I did my last few boards in Eagle and running the Outlines.ULP I
found on the net I had a milled board in less than an hour later. I am
still using left over used bits from when I was milling and selling
Piker 3X and 4X boards. I milled and sold hundreds of Piker boards
back in 2003. I then had them etched in Texas. The cost in a batch of
50 etched was  $16 and change each.  I can mill and drill the same for
around $6   $2 for the board and $4 for the drill and milling bit wear
and tear. Each bit gave me three boards and the drill bit would last a
little more than one board. I would sell the milled board for $35 I
went on to sell the Etched board for $40.

                                  John         


--- In Homebrew_PCBs@yahoogroups.com, "Leon Heller" <leon.heller@b...>
wrote:
>
> 
> ----- Original Message ----- 
> From: "crankorgan" <john@k...>
> To: <Homebrew_PCBs@yahoogroups.com>
> Sent: Friday, December 09, 2005 1:29 PM
> Subject: [Homebrew_PCBs] Mechanical Etching
> 
> 
> >     With mechanical etching you can mill and drill. Each bit will mill
> > 3 to 4  4" X 6" boards. It is safer for students thats why the schools
> > use the machines. Every board is usable. Chemical etching in the hands
> > of a beginner is hit or miss. Milling is cheaper and faster in some
> > cases. TT is the way to go but it is not working for everybody.
> 
> UV exposure and chemical etching is very easy and quick, I've never
had any 
> problems with it, although it did take a little experimentation to
get the 
> correct UV exposure time (30  minutes or so). Once that is
established it 
> works very well, every time.
> 
> Leon 
> 
> ---
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