Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.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´s 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´s 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´t 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´t 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´s bottles.
> >
> > For the thp station, i currently missing one information, probably
> > patric know it´s. 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´t
> > use it. Can you explain it please ?
> >
> > Regards
> > chris
> >
> >
>