Homebrew PCBs

On 02/04/2013 13:50, Alex Hun wrote:
> Been using the Seno 100 photo resist applicator to sensitize some pcb
> board stock. Main problem I find is getting an even coating.  The
> applicator sponge is fed from a valve in the main body when you push
> down. If that happens you get flooded in resist but just before you are
> starved, so the coating tends to be very variable in thickness from
> board to board and also on a single board as the stuff tries so quickly
> it does not level very well.
> Only trick I found so far is to keep the resist in the fridge to slow
> down the evaporation process as much as possible.
>
> Anybody got any other tips or tricks on how to get a good uniform,
> preferable thin, coating using this system?

How about using a squeegee on it.

Leon
-- 
Leon Heller
G1HSM