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Subject: Using laser to expose photoresist or toner?

From: "ngh2k3" <ngh2k3@...>
Date: 2009-07-03

Hi,
Has anyone tried using a low power lasers from cd/dvd or blue ray burner drives?
I expect the accuracy could be quite good. A blue ray laser should be capable of exposing photoresist very well, but are quite expensive.

I imagine this could also be used directly on a board coated in toner?


Im not sure about red dvd lasers - it would depend if photo resist is also sensitive to heat?

Most of these lasers are ~200-300mW, that should be able to melt plastics if focused, although I have not managed to get my laser to burn at 150mW yet. However there are many youtube videos showing these lasers used for cnc engraving plastics.

thanks