Homebrew PCBs

>
> I  could  not  resist  on  replying  to  this!  I prefer the 
> colophony/resin
> disolved  in  the  nitrocelulose thinner as it dries faster than disolved 
> in
> alcohol (any kind of - aethanol or methanol or isoprophyl).
>
> As  for  now,  I've produced (for my needs - this evening) 20 PCBs that 
> will
> last  at  least  10  years,  and  the only coating on the copper side is 
> the
> colophonium/resin.
>
>

hi

i am not sure if it is the best long-durability coat.
do you coat it before sodering and then not again?
i would fear the coat may be interupted near the soldering joints.

if i want to make a board that last forever i would clean it on the solder 
side after soldering
and then paint it with clear laquer.

do you have long term experience with this? does it really last so long?

i once dissolved it in acetone because i had no alcohol left. (i use ethyl 
alcohol).
it worked too but it dried maybe too quick. also it was not the shiny coat 
you get from
alcohol solved resin. how is this with nitrocelulose thinner? shiny or 
matt?
- at the moment i am not sure what nitrocelulose thinner is. i wonder if it
simply is "nitro thinner" as it is called here or something else.

you may have read when i suggested to use colophony/resin as resist in 
inkjet/plotter.
the problem is that it is a sticky mess when you dissolve it in ethyl 
alcohol.
i treid how it resists etchant and the results are not bad but i have no 
idea
how to make a "laquer" of it.

st