Homebrew PCBs

storan4wd wrote:
> 
> I think the real lesson I've learned is that the mask is designed for
> stencil printing only; quick drying isn't a priority as it's not
> intended to have anything in contact with it when curing. 

As a side note, did you ever consider that such cheap eBay stuff, sold
from china, is not even similar to real soldermask?

It must be repackaged stuff, the eBay seller can say what he wants with
his package. I don't know to read chinese, but to see what it really is
you could try google goggles from a camera phone and translate, if you
have the real manufacture package. EBay sellers say it's uv curing ink,
but it can just be UV curing EPOXY GLUE.

But if you look to one more expensive seller (the one who started to
sell the stuff as soldermask) he has a working method, see item
260937497342. He lays a bit of it at pcb center and spread it with the
mask directly. Expose for some time and them it should require extra
curing after solvent washing. A couple of years ago i asked him a msds
or that he just say what could be used as thinner for it. His answer:
'this is just chinese crap, no msds/documentation was ever written'.

You should know that real LPI soldermask is half the money by quantity
compared to that stuff. 

BTW (and off topic) Does anyone *really* know what PM or PMA solvent
is???? I must know (and be sure) to use with real soldermask... :/