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Plastic Sprue Bars
Excellent for round-house and long span bridges.

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.

Available in 6" and 8" rods.

Product Description:

Item# 5013: Plastic Sprue Bars, 6 ga (30/pk)
Item# 5020: Plastic Sprue Bars, 8 ga (30/pk)

Plastic Sprue Bars Datasheet.