Re: Fabricate PCB by using FR4 Epoxy double copper sides boa
If I keep it under room temperature 27 - 30 degree, does it has deadline?
I mean how long it can be kept (no scratch for the photoresist film under this temperature) for the best performance ?
Also, can u speak more about the steps of this PCB fabrication ? For example:
- scratch out the photoresist film
- .....
- ....
- expose it by violet under yellow lighted environment
- developing by developer
- ......... by stripper
- .... etc.
Thanks and best regards,
kwokhinglai