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![9C532494A0E5A1F57379BD8A5E2F0B9C](https://cdn.benco.com/MagickNetImageServer/ECommerceProductData/Image/9C532494A0E5A1F57379BD8A5E2F0B9C?size=200x200&p="no_image_available")
This material has the necessary cushioning and the correct water absorption, which enables the investment to control setting expansion. During burnout it chars to a black ash which crumbles easily when the mold is pushed out of the ring. Liners should be 3mm (1/8″) short of each end of the casting ring.
