I managed to buy a Destiny wall light sconce cheaply from a member here and decided to have a go at making some vacuum formed replicas. Originals have made over $800:eek This is my first project so I was going to get these professionally vacuum formed but decided to build my own former instead. I used Smooth-On Rebound 25 for the mold then Plasti-paste for the support and Task-18 for the resin. Unfortunately the resin was too heavy for the shell and when I went to demold it I found the cast was bowed:facepalm I then decided to use plaster, 25 kilos of the stuff in fact. I thought it would be easier to get the pour level if the mold was the size of a huge brick. By andy19422 at 2012-03-04 I used Polycraft SG2000 liquid plastic this time, the casts came out really nice. While I was making the mold I was also building a vacuum former after looking at the X robots video on you tube. After the first pull I realised the plastic wasn't getting pulled in to the recesses enough so I made another cast but this had a core of pink foam which I removed when the cast was set. This made the cast hollow so that I could drill holes in the recessed areas of the mold so that the plastic would be pulled down. By andy19422 at 2012-03-04 I was hoping to make these in one piece but the painting would have been a nightmare and I wasn't happy about what it looked like so I made an inner shell by lining the mold with clay 2mm thick except for the lighted areas. This is the cast you can see in the first photo just taken from the mold.