i3 Titan mount system by thsturgill

Last crawled date: 3 years ago

3/16/17 Modified plate&chain to eliminate screws and open channel for belt. This was original design, with the chain mount removed to allow better printing orientation. However along the way I also beefed it up, so it should be OK in this orientation. Side notches are to hold cable tie. Bearing blocks resized to not allow any play after bearing installed. Note that over/under extrusion can affect this.
3/14/17
I am designing this to re-build a clone printer onto a Prusa single frame using Prusa MK2 printed parts and regular threaded rods and re-using an E3D Titan extruder and IGUS bearings.
This system mounts the extruder captured close to the rails and can be difficult to assemble, bu the extruder CAN be assembled inside the mount. the mount connects to a plate with integrated belt catches and holes for bearing blocks. To narrow the width of the system (and reduce weight) the double bearings are in a single block. The bearing holders are designed to hold IGUS RJ4JP bearings without pressure so that they do not deform and bind. They will deform slightly during insertion and snap into place where they are held loosely. . Regular LM8UU bearings can be used also. About 12 3mm screws and nuts are used throughout the assembly.
I designed this to use an LJ12A3-4-Z/BX inductive sensor but should work with any 12 or 18mm sensor. Files are provided for both sizes, but only the 12mm has been tested.
The part cooler uses a standard 40mm fan, while the E3D stock fan will clip on the side in a very tight fit. The cover shown is not mine, but is available on thingiverse as thing: ######.
The optional cable chain mount provides some cable management even if you do not use a cable chain. It should fit a standard 15x20 chain. Be sure to place the attachment nuts toward the bottom so that they do not hit the upper bearing case. I used Phillips head screws which have a flatter head than allen head.
SCAD files are provided.