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Railway Bob's Foundry & Burner ConstructionRailway Bobs Foundry and Burner Construction. Monday, March 10, 2014. Pouring Shank For The A8 Crucible. When considering fabricating a pouring shank for my A8 crucible, I thought that a 1" slice of of 6"x 1/4" OD round tube would do the job. However, the quasi-parabolic shape of the crucible meant that it would be resting on the thin upper knife-edge of the steel pipe - not exactly the best situation. What to do? Then I hit on the idea! The next step was to add a handle to the 5-foot shank. A 1" sli...
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