Jewelry casting porosity and sand hole solution | Yihui precious metal precision casting improves yield rateIs it difficult to cure the porosity and sand holes in castings? Yihui's casting solution can help you improve your yield rate. In the precision casting industry of precious metal jewelry, porosity and sand holes are typical defects that production faces for a long time. Once a hole problem is detected in the casting quality inspection, the finished product can only be scrapped or reworked, which not only···...