I went through and had a look at the optical window since I got a print failure.
There were what looked like haze/smudges on the glass; what in the world would have caused it I can’t tell you…
When I took my wipe it became apparent that the body around the glass was dirtier than the glass.
What I gather is that with regular use the plastic body beside the glass and the resin tank film must naturally wear over time and lead to dust/debris that can accumulate. It would only make sense since the unit pulls and slides across the tank film.
By extension it would hold that it is also critical to ensure that the underside of resin tanks be kept pristine. Any debris, material, oils picked up by the resin tank will be directly transferred to the optics through use.
FYI I only keep my tanks in the printer or in clean tank cases. I am the only one who handles the resin tanks and I’m meticulous with “Clean handling”
I’ve attached a picture of the lens wipe I used.
