| http://www.w3.org/ns/prov#value | - In particular, acetal (e.g. DELRIN.RTM.) or polycarbonate (e.g. LEXAN.RTM.) resins,or filled, epoxy resins such as fiberglass are useful in this regard since they are relatively inexpensive, and can be purchased as sheet stock readily available in a variety of thicknesses.
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