Homebrew PCBs

On 07/21/2010 09:29 AM, designer_craig wrote:
> I have very good luck with elctroless tin.  The formula I use came
> from the September 1971 issue of Ham Radio magazine.
>
> .5g Stannous Chloride 2.0g Thiourea 3.0g Sulfamic Acid 100.0 mL
> Distilled water

Where do you get the chemicals? Also, do you have a very precise scale? 
My kitchen scale can theoretically meausure with the precision of one 
gram but how can I trust it for such small quantities?

Do you have pictures of the process?

bye
as