August 28, 2014: Both extruders working, but periodically jamming. See the "Clearing a Filament Jam" video on Makerbot's maintenance page for the Replicator . http://www.makerbot.com/support/replicator/documentation/maintenance/ | August 28, 2014: Both extruders working, but periodically jamming. See the "Clearing a Filament Jam" video on Makerbot's maintenance page for the Replicator . http://www.makerbot.com/support/replicator/documentation/maintenance/ |