DIY Silicone Mold. Make your own molds for coasters and trays, etc. Use a smooth plastic as your base, otherwise any creases or wrinkles in it will transfer to your resin art. ⠀⠀ Make sure to use 100% silicone caulking. ⠀⠀ This stuff can be very smelly 👃😬👃 kinda like a strong vinegar scent but I don't mind it too much. ⠀⠀ You probably should wear gloves even though experts say its chemically stable and likely non-toxic, it's best to err on the side of caution as it can be an irritant to some.