1. When should We Replace FEP Film?
Release films (FEP film and nFEP film) are consumable parts which need to be replaced after being used for a specific period of time. How do we know it’s time for a replacement? The signs indicating that a FEP or PFA (nFEP) film needs replacing as listed as follows:
- Severe dents, bumps, and scratches
- Too cloudy
- Loss of tension
To check for holes in the FEP or PFA (nFEP) film, pour some alcohol into the resin vat and place a paper towel underneath it. If you notice any wet spots on the paper towel, it may indicate the presence of holes in the film. This simple test can help you identify potential issues with the film and take necessary measures to address them.
2. Inspecting the FEP Film
- Holding the resin vat against the light
- Carefully observe the condition of the FEP or nFEP film to see if there are any damages
- The FEP/nFEP film is still functional if there are only minor scratches or slight loss of tension.
- Perform a test print to check if the release film is still fine to use
- A normal FEP or PFA (nFEP) film should produce prints with a smooth surface while a damaged FEP or PFA (nFEP) film's prints will have scratches across its surface.
Try increasing the lift height by 1 mm when encountering a slight loss of tension.