I'm painting my kitchen cupboard doors using a Wagner 250M airless sprayer. 

I used an oil based primer and sanded down before painting. I'm using a water based paint: Zinsser All Coat Satin (watered down 5%). 

I'm finding the face of the cupboards adhere nicely, but the paint is separating on the edges (see pics). Any ideas what could be causing this? 

 

You shouldn't be mixing water based and oil based products. Have you sought professional advice before proceeding?

 

The face of the cupboards are likely on borrowed time, btw  

7 minutes ago, Hels13 said:

Any ideas what could be causing this

Oil and water.

You should see my streaky doors where I did not manage to fully remove all the old, oil based, paint.

I love the modern water based glosses, but hate the sanding down to bare wood, and then a bit more, before application.