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What is the difference between the HS II and the HS III moldmaking rubber?

HS ii III moldmaking rubber
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What is the difference between the HS II and the HS III moldmaking rubber?

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The only difference between the two rubbers is the hardness. The HS III is softer and more flexible making it a better choice for one piece molds that contain deep undercuts or negative drafts. The HS II has better dimensional stability and is better suited for less undercut one piece molds and for two piece molds due to the stiffer nature of the cured rubber allowing it to line up better with a second half of a two piece mold.

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