I used that product some years ago, and found
that it works as advertised. The tin finish
was not bright-and-shiny (like commercially
"tinned" boards), but it looked OK.

I found that I had to remove the photo-resist
with fine steel wool, since the photo-resist
resisted several solvents that I tried. Use
soap and water after the steel wool, then
try the Tin-it again.

Dave Evans
dave.evans@dlcc.com

> -----Original Message-----
> From: Sean Breheny [mailto:shb7@CORNELL.EDU]
> Sent: Friday, February 19, 1999 10:32 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [OT] PCB Tinning
>
>
> HI all,
>
>         I have recently been trying to make my own PCBs and I
> bought some "Tin-It"
> (made by a company called Datak). This is a two-powder mix
> that when you
> dissolve both parts in warm water (140F) and immerse your etched and
> cleaned PCB into the water, it is supposed to produce a thin
> tin layer in
> 10-30 mins.
>
>         Well, I did as the instructions said, and after 1.5
> hours in the water,it
> did nothing but tarnish the copper a bit. I even tried
> removing the board
> and re-cleaning and drying it,and it did the same thing.
>
>         Has anyone tried this stuff and been successful?
>
> Thanks very much,
>
> Sean
>
>
> |
> | Sean Breheny
> | Amateur Radio Callsign: KA3YXM
> | Electrical Engineering Student
> \--------------=----------------
> Save lives, please look at http://www.all.org
> Personal page: http://www.people.cornell.edu/pages/shb7
> mailto:shb7@cornell.edu ICQ #: 3329174
>