Hi all. We’ve noticed some fine speckling/splatter on the inside of both of our Form2 machines covers. We notice these mostly on the left and front inside surfaces (when facing the front of the machine), and very little on the right inside surface. See pics. I found a couple others posts about this that were mostly concerned with how to clean it. My question is that we recently had to replace the optical windows on our machines due to similar speckling/splatter so I’m wondering if the same source is causing both (cover and window) splatter. FWIW the machine is only open long enough to remove or replace the build plate, change the resin tray, etc.
One theory I read was that these might be caused by the popping of air bubbles in the resin (pushed over by the wiper arm). That seems like a feasible explanation. I’m not overly concerned about the splatter on the cover itself, but splatter on the optical window is definitely cause for concern because it will effect print quality.
Has anyone else seen or experienced this? And, any ideas on how to prevent it or at the very least prevent the optical window from getting fouled? Thanks for any ideas.