A couple helpful tips with d.SIGN I have learned: Like the other members said, initial entry temp is crucial. Too high of a temp bakes the surface of the restoration and forms a dry "crust" trapping any remaining moisture inside as the furnace closes. This results in the remaining moisture to "boil" it's way out, usually blowing through the occlusion or margin area. Just be sure the initial entry temp is 400C - no big deal. Also, try sprinkling/dusting some margin porcelain on the still WET 2nd opaque, then tap the excess off. I use a dry brush, just dip the tip in margin porcelain (I use A1 on any shade becuase it is such a small amount it does dot effect anything) and tap it on the wet opaque. This works wonders in creating a bit of mechanical retention to eliminate pulling. It also gives the crown a nicer look, allowing the light that enters to "bounce" around internally. This step takes 1 extra minute, is easy and works.
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