I decided to make a foam door, for cost efficiency as well as light weight. I cut my door out and made it so fit into the wall in a way that would help with water proofing, cut the door handle and put a non opening plexiglass window. When I had it ready for applying pmf I thought I was a superhero, oh so proud of myself.
OHoh, well it didn't work out as well as I thought. I read how hospital sheets work well and make a hard solid finish, so I decided to use the sheets with the pmf methods described on here. I sanded the door and cleaned it well, applied my glue with the sheets. It was a bit difficult to smooth it out around the rounded edges and where I notched it to fit into the wall. I did get it done, but it stayed squishy way past the time that it should be dried.
Bubbles decided to come and visit, and overstayed her welcome. There were quite a few and I initially did the steam iron thing. No such luck, only a few responded well to this, but a large amt of them remained pretty pronounced. In my frustration I cut them open and injected glue. It has been sitting for a week now while I tinkered with other things, but it seems to have worked at quick glance.
It is still squishy and I am unsure about what to do to make it solid. Would it work if I painted on canvas over what is already there. I'm thinking paint over paint, like painting the canvas onto wood. Or would it work better if I glue the canvas down and then paint over, how we do over foam. This is how it looks now with the ugliest paint color I could possibly find, the brown one. The yellow pic just the glue before painted.
Could have been the hospital sheets ?? Sounds like they blocked the glue (?) from drying ... and may explain the bubbling ... 
What a bummer, I have about five more free sheets I was gonna use for my trailer, but guess this will put a stop to that huh? 
