How critical is dust

[coolmoon]

Hello everyone,

I was wondering how critical is dust control on the projector lens, quartz, etc... Does it have to be completely sterile virtually no dust at all? I'm sure there's some accumulation with static overtime, or does it increase the chance of failures.

[mongerdesigns]

Dust on the projector lenses, front Quartz window, and on the mirror are not a big deal. Not focusing on those surfaces.

If you have lots of dust in the top Quartz, then it could affect it, but hardly cause a failure.