On 18 September 2016 at 04:24, alienrelics@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
> Yikes! Melted glass. That might count it out as an etch resist, simply because I have no idea how you'd remove it without mechanically scraping it off.
A bit late here but..
Yes, if it's fused, it's a nightmare to remove. I use the stuff to mark text onto aluminium cases.
I use a 25W CO2 (Synrad Fenix Flyer), and have to get the focus quite right or it doesn't fuse, so I suspect that lower powers aren't going to work.
It's harder (when fused) than aluminium, so it doesn't scrub off with stainless scrubbies (without leaving a raised aluminium copy of the text, if you scrub long enough). On copper, I suspect it'll be worse.
It's great, if expensive, for its intended purpose. I'll try some on copper next time I do a run, and see if it solders through, just in case. Not sure it's gapless, though.
(The conversation about paint, though - interesting!)
Steve