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killgja
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Have been using microstar HS investment and emax for a years with no problems but recently we are experiencing voids in pressings (mostly molars) in the anatomy. They look like they have had a miniature icecream scoop taken right out of the top with everything else pressing out perfect. Margins, fit...etc perfect! Just these reandom voids. Microstar HS 23min set time from start of mix, strait in hot oven, burnout 1565, ivoclar and zubler pressing ovens, fan cooled, hand devested. Any thoughts?