Stronger idler arm for "Yet another extruder filament drive" (Extruder for Thing-o-Matic and earlier Makerbot Industries printers) Changes: * thicker front side * gave proper names to parametric steps * LONG HOLE, so the pressure bolt can come at an angle * wider long hole, so an M4 bolt can move freely * round hole for bearing (more strength) * reshaped sides for added strength * wider hole for 608Z bearing * wider axis hole for 608Z bearing Stronger body * thicker idler arm * larger base plate to attach idler arm to * wider mounting nut holes * gave names to many parametric operations * long stepper motor mounting holes to perfectly align * ever so slightly smaller mounting blocks * allow longer extruder mounting bolts then required Blog postings: marcuswolschon.blogspot.de/2012/12/testing-sailfish-firmware-and-new.html marcuswolschon.blogspot.de/2012/11/improving-gaerisls-extruder.html