Flask Liner For 2-Part Investments Otec The drum and casting arm

The drum and casting arm spin together as one unit

refined profile

giving the assembled holder a total standing height of 88mm (3‑1/2")

Not all 10x jeweler's loupes are the same

it is strongly recommended to replace all components — including the sight glass tube

Flask Liner For 2-Part Investments Otec The drum and casting armFlask 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