rostock mini wiring guides (top mount extruder)
by summetj, published
I mounted my extruder cold end on the top of my rostock mini, so I needed to guide all the wires from the extruder stepper, hot end, and endstops back down to the base. Here are the two blocks that gather all the wires up and keep them organized, one for the top and one for the bottom. The bottom block matches my rostock-mini power jack block that is mounted on the other side of the base. ( http://www.thingiverse.com/thing:62943 )
You can read all about my rostock-mini build on my blog: http://www.summet.com/blog/tag/rostock-mini/
Print the blocks. You may need to turn on support material for the top block. I used the same settings for the bottom block and just drilled the support material out of the holes, but you should be able to print the bottom block without support.
Drill two 3mm (1/8") holes to mount them. I used M3 screws & nuts, 45mm long on the bottom block and 25mm long on the top block. I would suggest trying 50 and 20mm lengths instead, as the bottom block screws are so short I couldn't use washers, and the top block screws stick out a bit more than I'd like.
The holes in both blocks are angled to keep the wires away from the carriages and arms, you can edit the SCAD files to change the angles if you need to or change their size. The large holes are big enough for you to get a 4 position connector (servo connector) through them if you don't already have a lot of other wires in them blocking the way. The small hole for the endstop wires is too small for connectors, so pass the wires up from the bottom and then solder to the endstop switches, or crimp the connectors on after wiring.
I used Flexo Pet braided expandable sleeving to make the bundle of wires look very nice, but you could use zipties or electrical tape to get a similar effect.
NB: To get the in and out direction of my airtripper v3 extruder the way I wanted, I mirrored it! So be sure to mount the wiring holders on the correct side for YOUR extruder (after you mount your extruder).