PDMS "massage" before each print.
To get more reliable prints and to prolong the life of the PDMS coating of the resin tank.
Use the provided metal spatula to firmly yet gently scrape the silicone layer in smooth movements in multiple directions for about 1 minute (while there is resin in the tank).
The scraping both mixes your resin and re-distributes the pigment evenly, and it also lets the PDMS breathe and prevents early clouding and sticking.