Glass is fun
It's fun what you can do with fleece & resin. I made a molded speaker box this way several years ago. Here is how I did it: I made my speaker rings from 3/4" MDF and made stands from some scraps to hold them in place. I stretched my fleece tight and stapled it to the rings and being sure to pull out all the wrinkles. Pulling the fleece back to the sides of the box and staple back to the sides. Before you pour on the resin make sure that the shape is something you will be happy with. Be liberal with the resin (I used just a standard fiberglass resin and liquid hardener, mix per the directions) You must work quickly on this part as the resin will start to congeal in 10 min depending on the temperature. After you have coated all the cloth and completely saturated. Let dry completely until it is hard. Then take a DA with 80 grit and knock off the fuzz of the fleece. Remove the stands and finish with a good quality plastic filler, then putty finish with 220 grit. Throw on a primer. Then if you are planning on vinyl you're ready to go, just a little spray adhesive and vinyl. Remember how you pulled the wrinkle out of the fleece as you will have to do the same with the vinyl. Leave it out in the sun or under a heat lamp. I'm know I short cut some of this. Let me know if you want some details of any of the steps.