Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

previous by date index next by date
previous in topic topic list next in topic

Subject: RE: [Homebrew_PCBs] Soldermask UV ink/paint/epoxy

From: "Boman33" <boman33@...>
Date: 2013-03-30

Thanks James,

I should not be posting/asking obvious questions when I am very sleepy: It
is about 4 in the morning.



Silk screening might work for your application without using a mask. Just
squeeze it through the screen with a squeegee as is normally done and lift
off the screen for a uniform coat.

Bertho



From: James Sent: Saturday, March 30, 2013 04:06



On 30/03/13 21:00, Boman33 wrote:
>
> How do you mask the application not to get the soldermask on the pads?
>
>
>

Same as for photoresist methods, print pads image onto tracing
paper/transparency, overlay on painted board (which is covered by
polyethylene plastic since the paint is "wet"), expose to UV for a few
minutes, remove plastic, wipe away the remaining unexposed ink from the
pads.

[Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]