Hardened emulsion washing away
1. Description of the problem
The emulsion peals off your screen when you reveal it, damaging your stencil.
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2. Possible origins
This is typical of an underexposed screen. There are several possible origins :
- you didn't respect the exposure timing and your emulsion is undercooked.
- you didn't respect the exposure distance and your emulsion is undercooked.
- your emulsion layer wasn't dry enough.
- your emulsion layer was too thick.
3. Solution
95% of exposure issues are due to a bad coating. Please check if you recognize your screen in one of the other guides before going further.
- First, make sure your screen is dry enough by touching it: it should not by sticky at all.
- Usual drying times goes from 3 to 4 hours depending on your room temperature and humidity.
- Then, check the distance of your exposure unit to your screen. With our kit, it should be around 60 cm.
- Last, make sure to follow the timing instruction precisely (+- 15sec).