Homebrew PCBs

I tried nail polish. I got what looked like crackle paint hairline webs 
in the final copper traces.....
looked almost like ice crystals.... seemed to have shrunk when it dried 
and then allowed acid to etch where it shrunk.
Considering all nail polish is not created equal there may be a better 
etch resist nail polish. I am not the
guy to test all of them.

At $9 ....seems the price of 15 feet of GREEN TRF is cheep enough to 
warrant experimenting with it.




On 12/09/2016 04:25 AM, Kevin Byrne kbyrne10@... [Homebrew_PCBs] 
wrote:
> Yea but my Green TRF gets perfect copper traces no pits, no joke. 
> Green trf under pieces of steel after? Would it work? My old way was 
> cheep nail polish a cheep artist brush and direct etch. Nail polish 
> remover to remove nail polish after acid bath. That could be done 
> cheep by just going to dollar store for supplies and no more pits for 
> your art work on copper. Kevin
> 
> ------------------------------------------------------------------------
>