Flask Liner For 2-Part Investments Otec this large polishing hood features

this large polishing hood features a 3" diameter hole in the bottom rear for secure mounting directly to your polishing table

Made from the finest heat-tempered

Crossing files are half round on two sides

Not all 10x jeweler's loupes are the same

Flask Liner For 2-Part Investments Otec this large polishing hood featuresFlask liners are used with 2 part investments to line the inside of casting flasks. Because 2 part investments expand during the setting process, a compressible liner is placed between the investment and the flask wall to absorb that expansion and help prevent cracking or flask failure. This non asbestos flask liner and wicking product comes as a 25 yard roll and is compatible with all 2 part investments. Its consistent thickness and width make it