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Spraying Mold Rubber | |||||||||
 If making a mold of an exceptionally
large model (such as this 24’ - 8 meter da Vinci Horse model) or
making large molds on a regular basis, you may want to consider
investing in a machine that will spray mold rubber (such as EZ
Spray 50). Smooth-On customers have been spraying mold rubber since the late 1970’s. The Advantages Of Spraying Mold Rubber: Mold rubber is mixed and dispensed by machine automatically. It is applied to the model surface in a uniform thickness in a fraction of the time it takes one or more people to brush-on the mold rubber by hand. The labor and time associated with mixing and applying is greatly reduced. Disadvantages: Decent spray equipment is somewhat expensive, ranging anywhere from $4,000 - $25,000 USD. There is also the time and cost associated with required maintenance of the equipment (cleaning, replacement parts, etc.). Caution: if investing in spray equipment, shop around and do not be tempted by “cheap” or bargain-priced machines. Sections of How to Make Molds and Castings Moldmaking Materials Moldmaking Process Moldmaking Problems and Solutions Other Pourable Mold Configurations And Techniques Making A Brush-on Rubber Mold Using Liquid Plastics Making A Hollow Casting Using 3-D Brush-On Mold Spraying Mold Rubber Mold Making Review
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