About this 3D model
Alu-Dual Hot End & Cooling Block Upgrade Spacers. These are the spacers you need to print the the Replicator 2X BEFORE you start the upgrade. I printed 2-off each - the 2.4mm spacer work well with the 3 in 1 extruder upgrades. For a stock setup Carls suggests using a 3.5mm spacer. The main reason for the upgrade was to allow PLA to be used and printed reliably. The upgrade was from RAFFLE, Carls shop. http://shop.raffle.ch/shop/ You can follow the development of this upgrade here â https://groups.google.com/forum/#!topic/makerbot/L33KI4DskHc%5B1-25-false%5D A video of my installation can be see here - http://youtu.be/QkZfISDw0Hc