Homebrew PCBs

Patrick, thank you for this precise and good informations ! Please
keep doing this. Next week I will go to a local distributor for
chemicals to  build first the tin plating bath (I will keep ask you
for details).

Regarding the hole plating, look what I have saved few years ago on my
local computer - and I think that's belonging to Mr Zingg :
http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine.html
http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine2.html
http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine3.html
http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine4.html
http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine5.html
http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine6.html
http://www.dioda.ro/tutorial/TroughHole_MZingg/Welcome%20to%20the%20homebrew%20through%20plating%20machine7.html

Unfortunately the original site is not working anymore.

Small descriptive diagram about this process (I think that MegaUK it
is reseller of Bungard).
http://www.megauk.com/through_hole_plating.php

Talking about alternative solutions to this complicate baths :
Silver and Copper trough hole (STH PCB)
http://www.eecoswitch.com/Catalog%20Files/cat_sth.htm
http://www.creativematerials.com/products/conductive-inks.html
http://www.thinktink.com/stack/volumes/volvi/condink.htm
http://www.achesonelectronicmaterials.com/doc/pds/USA/Ed461ss.pdf
LKPF has a similar solution and a video tutorial about usage.

Kind Regards
Daniel