Parts of the print stick to the FEP film  

Parts of the print stick to the FEP film

 Hello,

I have ordered new original Prusa Tough Resin.

Since then I have had problems with the print.

Resin: Prusament Resin Tough Sandstone

Exposure time 1st layer: 35s

Now I have the effect with 90% of the prints that apparently during printing the print sticks to the FEP film.

For example (as seen in the picture):Print of 6 objects. 2 objects are printed correctly, 4 objects "float" in the resin. These objects are only 40 or 60% printed When I remove one of the objects from the resin with tweezers, I notice that they stick to the FEP film.

If the print is repeated, it is usually the objects at the same position on the print platform that stick to the film.I have increased the time for the 1st layer to 45s, 60s and 90s without success.

Before the Sandstone Resin I printed with Azur, here the effect did not occur?

The printing platforms are absolutely clean and washed with isopropyl, the FEP film is absolutely transparent and newly applied.

Can someone help me, I am desperate, 2 litres of resin are already wasted.

Many thanks and greetings, Wolfram