Molded thermoset elastomers do not lend themselves to levels of tolerancing seen in machined metals or even in molded thermoplastics. Many factors involved in the manufacturing of molded rubber products affect tolerances.
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When considering the finish and appearance of molded products, several factors are important to take into account. Machined Finish of…
In the thermoplastic injection molding process, a common part specification is “no flash allowed.” With plastic, however, mold cavity vents cut to a depth of 0.002” do not fill. And in fact, parting line flash in plastic molding is often an indication of mold damage, which should be repaired as soon as practical.
Concentricity is the relationship of two or more cylindrical features that have a common center. The center of one feature…
