Seamless model and method of making a seamless model

The invention relates to a base and lower seamless model and is two method. The method includes the lower end of the other: A with exposition the substructure of outer surface; the continuous layer form sample plastic paste Shi Fu the substructure's outer surface, Shi Fu device of a sample plastic paste the continuous layer curing, and a say the sample plastic paste processing of curing and bearing contour according to be. The sample plastic paste of the invention is a mechanical foaming syntactic foam. Which is a foam fabric for inert gas pour into an to prepare the lower mechanical agitation, the back is a polyurethane is foam fabric or a a micro-spheres epoxy to form foam fabric. The polyurethane fabric according here showcase are comprising (1) and a organic and isocyanogen diethylene glycol dinitrate component; (2) And a polyhydric alcohol component; the back surface (a) according to the weightometer more than 50% macromolecular weight polyhydric alcohols and (b) according to the weightometer less than 50%) molecular weight polyhydric alcohols; (3) And a chemical thixotropic agent, wherein and inducing the thixotropy wheel sufficiently. The epoxy fabric is better comprising (1) and a epoxy resin; (2) And a thixotropic agent, wherein and inducing the thixotropy wheel; sufficiently(3) And the fixing piece, comprising a (a) at least a polyethylenamine and (b) at least a which comprises at least two amino hydrogen wheel, amines (a) and (b) of the number of the is configured the epoxy resin sufficiently the curing.