Larry,
I used Kodak AZ111 a long time ago, not available now but I used an
old 78 rpm turntable and use an
eye dropper to place it on the spinning pcb blank.
to get a very even coat.
Not sure this will help with your photo resist or not.
Robert
Larry Battraw wrote:
> Hi, I recently bought the roller-coating version of this photo resist and am
> having a terrible time getting a board to cure properly. What generally
> happens is that the board will cure somewhat well except for a big, jagged
> "rip" through the center of the board's resist. It looks like a ragged tear
> in the resist and spreads out in sharp edges kind of resembling a lighting
> strike with the streamers of the defect branching out. If anyone is
> interested I can post a picture of the problem. Has anyone used this stuff
> and had any success with it? I've tried diluting it since it tends to
> capture bubbles like crazy when spread normally but that just results in a
> pool of concentrated resist in the center of the board and decreasing
> amounts as it reaches the edges of the board. I would really appreciate
> some hints since the stuff has great potential to coat large/thick boards
> that won't fit in a normal laminator with the dry film resist.
>
> Thanks!
> Larry
>
>
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