Homebrew PCBs

Chris,

I must have missed the mail, please resend.

Markus

scx31114 schrieb:
>
> --- In Homebrew_PCBs@yahoogroups.com 
> <mailto:Homebrew_PCBs%40yahoogroups.com>, Markus Zingg <homebrew-pcb@...>
> wrote:
> >
> > Chris,
> >
> > For a small station, using massive anodes is much easier than the
> nugget
> > aproach.
>
> This is correct, but i want know it for the reason i have emailed
> your privatly.
>
> >
> > I use copper anodes which are 100 x 80 x 8 mm in size. I made a
> thread
> > into one of the sides and use another copper rod (also with a
> thread)
> > that goes into the anodes. I then moved a pvc tube over the rod and
> > sealed it on the bottom towards the anodes with PVC glue to avoid
> the
> > rod being used up by the plating process. You then can easily
> attach
> > wires to the top of the rod.
> >
> > Be aware that at least Bungards starter kit is not evenly
> divideable.
> > That said some containers contain proportionally more of a given
> bath
> > (i.e. the predip) than others. So your calculation to divide it by
> 7
> > might be too optimistic. Can't comment on the one from MegaUK. Back
> when
> > I started, I also did so with Bugnard.
> >
> My calculation are 6, eventually 7, calculated with a requirement of
> 2 lt for the container ( double eurocard setup). The chemistry from
> MegaUK and from Bungard are the same coming from Sweden.
> I have checked the prices on MegaUK and it\ufffds costs over two times
> more than that of Bungard. And yes, the starter kit contains
> additional chemistry for integrating the chemicals after some
> processing. It\ufffds a starter kit and not just the first setup quantity.
> There exist a integrator chemistry kit for regenerating the
> chemistri after some usage, and this is a lot cheaper then the
> required initial starter kit. Neverless the starter kits as ben said
> contains such additional replishments chemistry.
>
> > Putting the chemistry back into bottles is a good idea anyways. I
> also
> > do it this way for several reasons. It allows you to firmly keep it
> air
> > sealed, and also to place it in a dark and cool place all of which
> helps
> > to keep the chemistry alive over longer periodes.
> >
> > HTH
> >
> > Markus
> >
> > scx31114 schrieb:
> > >
> > > Hello, the smallparts source is great, 6.3$ the part.
> > > For me, the problem getting to a pcb frabicant is a litt le
> problem
> > > for distances. I think, that i buy a starter package from MegaUK
> > > or from Bungard. I don\ufffdt know, if the chemical is allowed to be
> > > shipped over air. If there is interest, i can divide the chemical
> > > in 6 or 7 parts in order that don\ufffdt everyone needs to buy a
> starter
> > > kit. The price is 850 Euro div 6 (7)+ shipping.
> > > Similar thing can be made for solder/photo mask.
> > > As info, i plan to use PP boxes inside a larger heated water (???)
> > > tray. This water is circulated using a pump. The tray laying
> > > above a central rod, that makes all the liquid instable, and a
> > > rc servo drives the tray in order to oscillate over the rod.
> > > All this makes the heating and moving very cheap. This system
> > > works only for infrequent usage where the chemicals after using it
> > > are reposted inside it\ufffds bottles.
> > >
> > > For the thp station, i currently missing one information, probably
> > > patric know it\ufffds. Using nuggets, that goes down in the liquid,
> > > how the electrical connection is made. I heared professional
> > > manufacture uses titanum hulls, but there exist others, that don\ufffdt
> > > use it. Can you explain it please ?
> > >
> > > Regards
> > > chris
> > >
> > >
> >
>
>