I've looked around a bit and am having a very hard time finding a wide variety of rubber molds. I managed to pick up a few for making rocks at Hobby Lobby but I can't find a single store that sells molds for sand bag emplacements. I figured a quick google search would turn up gold but all I found was tutorials on using the molds not where to buy them. My google-fu appears to be weak with this subject and I wonder if anyone out there knows of any online retailers that sell rubber molds that are great for 40k terrain, particularly sand bags. Any and all help is appreciated.