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Removable
Acetal Resin
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<blockquote data-quote="j_marks101" data-source="post: 67865" data-attributes="member: 6071"><p>Valplast has a few gypsum products for duplicate models and investing flexible thermoplastic resins. Accu-Val is a type 3 yellow stone with 0.3% expansion for duplicate models; helps improve the fit after processing. They also have Val-stone, a die stone with I think 13,000 psi compression strength that keeps its physical properties with high heat and high pressure during injection. Works great for Valplast, I'd imagine it works well for acetal as well although I will never touch that stuff in my lab! Water/powder ratios are crucial - its amazing how few denture techs pay attention to that stuff, they think it's only for investments and c&b guys</p></blockquote><p></p>
[QUOTE="j_marks101, post: 67865, member: 6071"] Valplast has a few gypsum products for duplicate models and investing flexible thermoplastic resins. Accu-Val is a type 3 yellow stone with 0.3% expansion for duplicate models; helps improve the fit after processing. They also have Val-stone, a die stone with I think 13,000 psi compression strength that keeps its physical properties with high heat and high pressure during injection. Works great for Valplast, I'd imagine it works well for acetal as well although I will never touch that stuff in my lab! Water/powder ratios are crucial - its amazing how few denture techs pay attention to that stuff, they think it's only for investments and c&b guys [/QUOTE]
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