Print Stuck to FEP
Elegoo 3D Printer (Resin)
Severity: ModerateWhat Does This Error Mean?
Print stuck to FEP means the cured resin bonded to the bottom film instead of the build plate. This usually means the build plate needs re-leveling or the bottom exposure is too high. Remove the cured piece carefully, clean the vat, and re-level before retrying.
Affected Models
- Elegoo Mars 4
- Elegoo Mars 3
- Elegoo Saturn 3
- Elegoo Saturn 2
Common Causes
- Build plate too high — not close enough to the FEP
- Bottom exposure time too long — print cures harder to FEP than plate
- FEP not tensioned correctly
- Build plate surface too smooth — not enough grip
How to Fix It
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Drain the resin vat and carefully remove the stuck piece.
Pour the resin back into its bottle. Use a plastic scraper (never metal) to gently peel the cured piece from the FEP. Go slowly — forcing it can puncture the film.
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Inspect the FEP for damage after removing the stuck piece.
If the FEP is punctured or heavily scratched where the piece was stuck, replace it before your next print.
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Re-level the build plate — move it 0.05–0.1 mm closer to the FEP.
The build plate must be close enough for the first layer to bond firmly. Re-do the paper leveling method and lower the Z=0 position slightly.
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Reduce the bottom layer exposure time by 5–10 seconds.
Excessive bottom exposure makes the first layers cure so hard they stick to the FEP. Reduce bottom exposure and increase normal exposure slightly to compensate.
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Lightly sand the build plate with 200-grit sandpaper.
A slightly rough surface gives the resin more to grip. Sand in a cross-hatch pattern, then clean with IPA before printing.
Frequently Asked Questions
Will a print stuck to the FEP always damage the film?
Not always. If you remove it carefully with a plastic scraper, the FEP often survives. Check for scratches or micro-holes after removal before printing again.
Can I use release spray to prevent FEP sticking?
Some users apply a very thin coat of PTFE release spray to the FEP. Use sparingly — too much reduces UV transmission and causes under-curing.