T1 Gearhead Extruder + 2040 Vslot Plate

thingiverse

I needed an extruder mounted directly to my X carriage plate, so I merged two existing parts together using OpenSCAD and printed one successfully. This setup requires a Nema17 geared stepper motor, which is designed around hobbed gears approximately 12mm in diameter. Since most useful geared Nema17s have shafts that are 8mm wide, you will need an 8mm ID/11.4mm OD gear. I've used it with both 5:1 and 14:1 geared steppers without issues. Other necessary components include: A 608zz bearing for the idler along with something to serve as a central shaft, either an 8mm grub screw or a printed part. 2x M4x50mm screws for the idler. 2x M4 nuts Either M5 or M4 screws for mounting the groovemount. A printed Shim A groovemount plate that can be either printed or machined (or even made from wood). The E3D and jhead plates work fine. I've included one modification with holes to bolt a 40mm fan in place. I don't use springs with this configuration. The hinge tends to break off due to stress points as the layers are parallel, which can be solved by using two different approaches: t1_carriage.slic3r.amf and X_Carriage_shifted.stl. The AMF file is an export from Slic3r with a modifier mesh that prints the top area at 100% infill. The STL file should be rotated -90deg in the X axis and printed without support. The trimmed version should be printed with support in the provided orientation. The idler used here was derived from Jonas Kuehling's greg-wades, modified slightly to bring it closer to the hob. Print Settings: Printer Brand: RepRap Printer: Fletcher Rafts: No Supports: No Resolution: 0.2mm Infill: 40% Honeycomb Notes: 3 perimeters, 3 top and bottom layers. The t1_carriage.slic3r.amf file is pre-configured for Slic3r 1.2.9 with a modifier mesh to set the top hinge area to 100% infill. Post-Printing: It's suggested that you reinforce the hinge joint with some epoxy after printing.