Oramask peeling off paint or something else? - Projects - Inventables Community Forum

I primed the MDF, painted, sanded and painted again. I masked it with Oramask 813 and then cut. After the cut, I sprayed with primer and let it dry for a few hours. When I peeled the mask, this is what happened. I’m not really sure why it did that. I’ve done the same process before with no issues. The only difference I can think of is that the mask was on longer than normal because I had a belt break near the end of the cut and finished the next day. I’d appreciate any thoughts.

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