Plastic Sprue Bars
PSB-01
Many in stock
Designed to be used as a runner bar during the fabrication process for round-house and long-span bridges, these low-carbon, clear-acrylic sprue bars prevent bridgework distortion during investing and to burn-out cleanly without residue. Once the sprue bars are warmed over a burner, they can be bent to the desired shape to fit the arch when cooled.
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