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Re: Soldermask UV ink/paint/epoxy

2013-04-09 by Ben L

Looked at Ebay,  it says that they can not ship to the US.

Ben

--- In Homebrew_PCBs@yahoogroups.com, James <bitsyboffin@...> wrote:
>
> On 01/04/13 05:49, cillino25 wrote:
> > I'm very interested on this too, but I never found the right UV 
> > curable white ink..could you please link the product you're using or 
> > at least its name? Can I find it on the bay?
> 
> Hi, can be purchased on ebay, in 10ml syringe, and 100gram jars.
> 
> Some ebay items for you (search for "solder mask repairing paint")...
> 
> 10ml Green: 281017402222
> 10ml Red: 170869294776
> 10ml Blue: 180917174704
> 
> 100g Green: 350753761856
> 100g Blue: 190547440482
> 100g Red: 200784217886
> 100g White: 200622510695
> 100g Black: 281074672686
> 
> It goes a long way since you want to spread it over really thinly (if 
> too thick only the top cures leaving the paint actually on the board 
> uncured and so it chips off.
> 
> To apply it, briefly speaking, cover the board with the ink, or put a 
> SMALL blob in the middle, put a piece of plastic over it, and smooth it 
> down so you try and avoid air bubbles, then expose to artwork (pads are 
> black, the rest is clear).  The exposure time is quite long (30 minutes 
> in sunlight say). Once exposed, peel off the plastic and wipe the board 
> with some light solvent, acetone, turps, "gasoline" as the ebay sellers 
> say, the unexposed areas will wipe away.
> 
> The ink does NOT air dry, don't try drying it out before exposing, that 
> doesn't work.  The plastic you choose is important, because the stuff 
> will bond to many plastics during exposure which is of course bad, 
> you'll need to experiment with some different plastics to find one that 
> works (and let us all know what you found :)), I believe that 
> polyethylene is generally the one to use, maybe polypropylene.  I'm 
> currently using some old plastic press seal type bags I found in my shed 
> that work (conversely other plastic press seal type bags I had didn't 
> work, as I say, the exact type of plastic is important).
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>

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