Second Generation (MKII) - May 2014 - Improved materials specs, New design This is a POLY URETHANE, MANUAL CAST kit to prevent melting/warping problem in long extrusions. It is an upgrade kit for the Delrin Plunger. It replaces the existing plunger in Makerbot Replicator 2X.
Second Generation (MKII) - December 2014 - Improved materials specs, New design This is a POLY URETHANE, MANUAL CAST kit to prevent melting/warping problem in long extrusions. It is an upgrade kit for the Delrin Plunger. It replaces the existing plunger in Makerbot Replicator 2.
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