sndmn2
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So, check my understanding. When you devested, the cut looking areas had no investment in them to blast or dislodge.I understand what your saying. Here is the interesting part. It happened to me on the first attempt and I got a total miscast. So I had a buddy who does these all the time cast this one and he got the same result. The investment was more on the surface. Sorta hollow.We used a sprue with a reservoir and an additional vent sprue. I agree, I have never had this happen before and it doesnt make sense. This was very long casting exceeding the length of the plastic sleave it that matters at all.
Yeah, but that doesn't make sense either.Gremlins.
Kidding aside, it seems like it was a smooth void produced between the investing time and setting.
Or someone switched your ring out for Halloween to prank you.
LCM