Could someone help me with this problem? (attached photo) It is the impression of a ring with 0.025 definition and previously I had not had this problem. The impression has made a skin at the base of the prototype and also has not completed the part of the flower.
This is typical when the optical path of the laser is contaminated. Check the bottom of the tank (both sides), the printer’s optical window (both sides), the main mirror and the galvos mirrors, in that order. Most of the time it’s either the optical window or the galvo mirrors.
Formlabs will help you with instructions on how to access and clean the different parts if you open a support ticket.