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: What's the best photoresist?

From: garydeal <garydeal@...>
Date: 2008-05-26

>...but have become
>very frustrated attempting to apply it without bubbles.

If it's of any help, in my limited experience, when I have small bubbles
I use a sharp point to poke a ∗tiny∗ hole through the cover sheet and
resist, then run it through the laminator again. Preferably at the
trailing edge - the last part that will go through the laminator. The
hole should allow the trapped air to escape, and since the resist is
gooey when hot it usually clears the bubble and seals up nicely. Not
always 100% effective, but it works often enough for me to bring up.

-Gary