Hi Lukas Thanks for your info Im in plan of fabricating 3d micro channels & devices So far , as per my knowledge they do different layers separately and bond them together Instead of that im just trying to have 2-3 layers of PDMS together so that i can get it in one shot, In order to avoid bonding problems, shrinkage......... Even i may be wrong ???? Im not sure whether it is possible im just trying. Correct me if I'm wrong !