Extruder w Printed Spring Upgrade for Makerbot Replicator I 3d Printer

Your extruder broke but you don't have time to wait for a spring to arrive in the mail. Relax. This extruder has a 3d printed spring.

I will put a recirculating air filter for ABS 3d printers on [3dPrintFileMarket.com](http://www.3dprintfilemarket.com) for download in a couple days. An exhaust air filter will be available on [3d Print File Market](http://www.3dprintfilemarket.com) in a couple of weeks. The exhaust filter and recirculating air filter working together will have your 3d printing