My Hemera was not held that strongly to the dock. Extending the set screw a bit caused it to be held a bit more securely. plan on adjusting this once you have it all installed. Once it is right, then put on the drop of glue (as described in the V6 tool assembly instructions)
There is a bit of “wiggle room” when assembling the Receiver onto the Hemera. Plan on loosening these screws to adjust the position of the docked Hemera so that the coupler can pick it up and dock it properly. When you are first testing the placing of the Hemera in the dock, and the coupler moving away from the dock, be prepared to catch the Hemera if it does not stay in the dock. Yes, I found this out the hard way!.
I found it much easier to do all the connections at the tool end of the cable, with the tool removed from the machine and sitting on the workbench, then once that is all done, put it back on the machine and do this step
5mm Allen key makes a good spacer for setting the height, just make sure it is rotated so the flat sides are on the top and bottom
You should be more consistent with the labeling on the wires. The EARTH ground wires from the AC power connector, the frame and the heated bed all say “PSU GND”. But the black wires going to the Duet also say “PSU GND”, but really go to “PSU V-” It is pretty obvious in the photos.
Do not put thread lock on the upper two screws at this time. They have to be removed later to install the ground wires
The spring will compress as you tighten theM3 screw. Hold the dowel pin on the back side of the shaft while you do this. Put the Allen wrench into the set screw and start to tighten it, until it just starts to touch the shaft. Now turn the shaft using the dowel pin on the back to get some leverage. Apply a bit of torque to the set screw as you turn the shaft. You will be able to feel when the set screw is over the flat on the shaft, since it will turn in farther. If you just happened to have the set screw line up with the flat, you will not be able to turn the shaft very far. If you keep wiggling the shaft as you tighten the screw, you will end up with the screw bottomed out on the flat. Now tighten it fully and you are done.
There is an easy way to do this. Get the thrust bearing and spring set up, as described above. Put the thread lock on the M3 button head screw. Put the set screw into the gear, but do not put it in far enough to extend into the bore of the gear. Now hold the far end the shaft and start to push on the gear, Have the gear set screw on the bottom. Wiggle it as needed to mesh with the pinion gear. I did not need to loosen the stepper motor mount screws, I just had to get the teeth aligned. Now install the 3mm button head screw on the end of the shaft. (continued in next comment)
Consider putting the glue into the hole in the gear, that way when you push the gear onto the shaft, the excess glue goes away from the motor bearing, rather than into it
The easy way to get the 3mm spacing is to use a 3mm Allen wrench as a spacer. Make sure it is positioned so the flats bear on the gear and motor face
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
No reputation gained yet.