MAKERGEAR M2 EXTRUDER (REMIX OF BEN HECK'S DESIGN)

thingiverse

##Remix of Ben Heck's awesome upgrade for the Makergear M2 After two years of using my Makergear M2, I noticed that my PLA parts for the extruder had degraded and were no longer feeding the filament correctly. After searching for a replacement for several days, I discovered [Ben Heck's extruder upgrade](https://www.thingiverse.com/thing:3538619). I highly recommend this upgrade, as it is convenient and extremely helpful. However, I wanted to use metric hardware that I already had on hand. Here are some changes I made to the original models, along with a few additional upgrades: **MAGNETS** I had 6 mm and 10 mm neodymium magnets in stock, but the 10 mm magnets did not fit into Ben's original designs. I resized all of the magnet locations to accommodate 10 mm magnets, as the 6 mm magnets were not providing enough force to hold the fan components securely. **PTFE TUBING** The site where the PTFE tubing enters the pinch arm was redesigned with a tighter diameter to reduce wobble in the tubing. **SPRING** I made some adjustments to the spring sites on the pinch arm and motor mount, reducing their diameters to prevent the spring from popping out and flying off. I purchased a compression spring from Home Depot, which is described below in the update section. **SPACER** I created a spacer for the pinch arm since it was difficult to find the correct size in my area. **MOTOR MOUNT** I modified the motor mount model so that it could be printed without supports. # UPDATES 11-15-19 I made some adjustments to the spring and its location on the pinch arm and motor mount. I increased the diameter to 12.2mm to accommodate a stronger spring. The spring used is from a [spring kit at Home Depot](https://www.homedepot.com/p/Everbilt-Spring-Assortment-Kit-84-Pack-13554/203133714?g_store=2770&mtc=Shopping-B-F_D25H-G-D25H-25_4_BUILDERS_HARDWARE-Multi-NA-Feed-LIA-NA-NA-BuildersHardware_LIA&cm_mmc=Shopping-B-F_D25H-G-D25H-25_4_BUILDERS_HARDWARE-Multi-NA-Feed-LIA-NA-NA-BuildersHardware_LIA-71700000044822926-58700004636006010-92700039037730264&gclid=Cj0KCQiAtrnuBRDXARIsABiN-7BWsXD33aAeqDYXRlRfknfGP60Qx2UlaY6aLxScXfh-UEGhddlQEnEaAishEALw_wcB&gclsrc=aw.ds).