I have made some casts with plaster using two of the earlier vaccum formed pieces to see what outcome this has.
The first one i tried was the top image of the keys inside the frames.
This came out really well but i feel that the piece would need something more added to it, perhaps some collage on the background and painted detail? The corner broke up when i was taking it out of the mould so this could be fixed this way under the collage.
The second one I was really happy with, it picked up almost all of the detail from the cast.
I noticed that now it is completely dry there are a few bits of dirt grease etc that were probably in the cast before i put the plaster in, which spoils it a little. I need to file the edges down to make this look more proffessional.