Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "dkosokar" <dkosokar@...> wrote:
>
> I'm looking for a positive acting photoresist I can apply at home.
> I've wanted to try Positiv 20 but can't seem to buy it in the USA. Can
> it be had anywhere that you folks know of? Is it a decent resist?
> 
> What are you folks using? Yes, I know there are presensitized boards,
> but they are very expensive.
> 
> Does anyone use dry film resist? I have a laminator, and wouldn't mind
> using it if this type of resist works well. Does a regular laminator
> work to apply this resist?
> 
> I've tried Datak negative acting resist, without much luck, and now my
> bottle is so old, I don't trust it any more. Anyone use this stuff
> successfully? I prefer pos resist because it's easier to print than
> negatives.
> 
> How about radical ideas like Diazo compounds used for silk screening?
> Would this stuff have fine enough detail and woul it stand up to
> ferric chloride?
> 
> Any input would be greatly appreciated!
>Hii dsokokar,

i have tried with the "Diazol" for photo silkscreen, it must be mixing
with his katalis(SR liquid), its have yellow/orange color..
it pretty after exposure +/- 5 minute, then spray with water, but the
problem is...this photoresist is not strong enough with ferric chloride...