Skratches coused be laser on the bottom of FEP Film VAT

A while ago I have transfered from Ressin tank to FEP Film VAT. Since then I had in total about 50 failed prints and changed film 3 times. After 3rd in row fail I have empty the tank and there seems to be skratches on the boootom. Are they coused by the leser ? and is there a way to just buy the plastic bed of the FEP VAT ?skratches

those scratches are most likely caused by scrapping the vat too hard, the laser can’t do anything like that
you can buy the acrylic plate separately:

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