> I'll have to dig up the spectral characteristics of common clear plastics. I > know acrylic is does not transmit IR. That's why laser engravers work well on > them. But I'm not sure about the shorter wavelengths.
Yeah, I bought a 10.64µm CO2 laser engraver, which had an impressive looking orange acrylic window so you could see the workings. However, that window was cracked when it arrived, and I replaced it with a thick sheet of clear acrylic. The orange coloring does no good at that wavelength (it just looks cool) and it's much easier to see what's going through the new window. Any remaining leakage would be reduced, as the new window is nearly three times as thick as the original. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5B0F0C4F-1097-4AC7-A233-792ECFA8E6E7%40mac.com?hl=en-GB. For more options, visit https://groups.google.com/groups/opt_out.
