Canon recommends using silicon (not silicone) adhesive for its 3-D models. I have some silicone in a tube that can be used for waterproofing around windows, etc. Is it the same stuff? I guess I could give it a try, but I was wondering if anyone knows the difference (if there is any) between silicon an silicone adhesives. By the way, the stuff they call for is thick and builds up so you can use it as a spacer between different levels of 3-D models. Here's a snippet of the model instructions if it helps.