Abstract: A method for making a prototype mold includes step 1: to prepare thermoplastic liquid by mixing hollow particles and resin; step 2: to crush used prototype molds into 5 mm to 10 mm particles; step 3: to mix the crushed particles in step 2 with the thermoplastic liquid; step 4: to eliminate bubbles in the mixture of the thermoplastic liquid and the crushed particles; step 5: to pour the mixture of the thermoplastic liquid and the crushed particles in a mold to make a product; step 6: to heat the product in step 5 at 60 to 200 degrees Celsius for 0.5 to 120 hours; step 7: to heat the product in step 6 at 60 to 80 degrees Celsius for 8 to 12 hours to obtain a stable crystal structure; step 8: to take the product from the mold, and step 9: to trim the product.

Abstract: A method for making a prototype mold includes step 1: to prepare thermoplastic liquid by mixing hollow particles and resin; step 2: to crush used prototype molds into 5 mm to 10 mm particles; step 3: to mix the crushed particles in step 2 with the thermoplastic liquid; step 4: to eliminate bubbles in the mixture of the thermoplastic liquid and the crushed particles; step 5: to pour the mixture of the thermoplastic liquid and the crushed particles in a mold to make a product; step 6: to heat the product in step 5 at 60 to 200 degrees Celsius for 0.5 to 120 hours; step 7: to heat the product in step 6 at 60 to 80 degrees Celsius for 8 to 12 hours to obtain a stable crystal structure; step 8: to take the product from the mold, and step 9: to trim the product.

Abstract: A method for dehydrating wooden material includes step 1 to cut wooden material into sections; step 2 to soak the wooden material in oil and to heat the oil; step 3 to soak the wooden material in step 2 in boiling water to resolve the gluey material in the wooden material; step 4 to cool the wooden material in step 3; step 5 to remove gluey particles on surface of the wooden material, and step 6 to dry the wooden material in step 5.