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Subject: Re: Making PCB using these new 405nm LASER Diodes

From: "javaguy11111" <javaguy11111@...>
Date: 2009-11-13

--- In Homebrew_PCBs@yahoogroups.com, Volkan Sahin <v_sahin@...> wrote:
>
> I've a working prototype. I'm using 150mw 405nm blue ray laser diode. Without complicated optics I can get ~3 mil trace width/space. Currently, I'm using  Dichromated PVA  based homemade photoresist.  The problem is without  polygon mirror scanner, it is very slow but result is impressive. The exposure time required for  1.5 mil spot is ~20 microseconds.
> Volkan
>

I assume that you are doing UV exposure as opposed to ablation as mentioned in the earlier post.