Follow-up: Terrible stepped surface and som areas full of resin

[beaveren]

Follow up post from the closed topic link below:

Terrible stepped surface and some areas full of resin

Just had a horrible print after about 9 hours come off my Form2. Worst result I have received to date. Everything looks fine until about layer 250 of an 1100 layer 100micron print. Standard grey v4 with gently used extended life resin vat. Above layer 250 or so the print starts to develop soft detail and then a rather pronounced step effect. There where very well defined registration sockets that got filled with resin and cured. I will try and add a few pictures.

I was instructed by support to clean galvo motors and a cleaning kit was sent out free of charge. While removing resin tray in preparation of cleaning I noticed that the optic window below the tank was terribly streaked, The window was cleaned per cleaning instructions located on Formlabs website.

My results after this cleaning are night and day. I believe the streaking was causing massive laser flare across most of the window surface.