Your bookkeeper is pretty easy if you can get a $1.5k hobby purchase past her :)
Donald.
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----- Original Message -----
> From: "spacedcowboy@..." <simon.gornall@...>
> To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> Sent: Thursday, October 14, 2010 6:39:16 PM
> Subject: [Homebrew_PCBs] Change of plan
>
> So, LPKF will sell their chemistry separately (they just sent me a
> price-list) and they too have a 3-stage plus plating-stage process
> using black-hole techniques. So the new plan is to get the machine
> from China, and use the chemistry from LPKF.
>
> The manual for the Mini-Contac-RS goes into quite some detail about
> how long to spend in each bath, what temperatures, the perils of using
> impure water for washing etc. It actually seems a fairly
> straightforward process though, and they offer used-chemistry-handling
> as well. So that seems to sort out the chemical side of things
>
> As far as the hardware, from what I can tell it's basically a
> pre-built version of Markus Zingg's homebrew station
> (http://www.0x0000ff.com/tps/) - I doubt it uses the
> reverse-polarity-plating technique that LPKF boast about, but it's
> probably good enough for me assuming I don't try and push the limits
> of aspect ratio...
>
> As far as I know (I only got the consumables pricelist), a
> Mini-Contac-RS is about $10k. The chinese version (admittedly less
> capable) is circa $1.5k. The former I have no chance of getting past
> my wife - the latter is vaguely possible :)
>
> Simon.
>