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Subject: RE: [Homebrew_PCBs] flatbed scanner lamps

From: "Tony Smith" <ajsmith1968@...>
Date: 2013-02-23

> >You need UV lamps (long wave for positive resist)!
> >
> >Leon
> >--
> >Leon Heller
> >G1HSM
>
> 405nm?
> Cristian


About that, some boards need closer to 370nm. That's in the UVA band. The
germicidal ones are UVC (200nm-ish).

The UV LEDs you can buy are usually around 400nm or so, which is why they
work. I've seen shorter wavelength ones, but they were a bit $$$. Those
little nail polish curing lamps are probably the cheapest (off eBay).

Tony