I've just seen this right now, I'm Alvaro Rey, the designer of the p3steel v4 mod. The change was made, because with previous versions with the extruder homed, if you go up in the Z axis, the extruder motor could hit the Z axis top plate. So, in order to avoid that, I just changed the design.
The bearing in the z axis is not necessary but some people prefer ...
You answered your own question in a comment.
Yes, of course, increasing the maximum supplied current to the motor gets rid of the issue. Still, I'd rather go with lower current to limit heating up the motors. I was just wondering if there is something in the two slicing engines that makes cura provoke much harsher movements that cause the printer to lose ...
This is mere supposition on my part, and not a definitive answer. The real answer would need to come from either the designer or someone connected to them, I guess. I have contacted people around the designer and invited them to comment/answer, but that appears to still be "pending"...
In response, or - rather - with respect to, to the comments below by ...
You could look up a Clevis pin with one groove.
You could look up a Clevis pin with a hole for a split pin.
Perhaps a Shoulder screw with a ground shank and a low profile head.
Use a plain rod with Dome caps if you will not need to remove often.
If available an internal threaded Standoff would work.
A Slotted spring pin may work if the hole dimensions are ...
I have finally received a reply from my supplier, which backs up StarWind's answer:
I did not use a rod with grooves for retaining rings.
I used bolts and nuts with a thin head.
Doesn't really answer my question though, as I really rather hanker after the 8 mm smooth rod with the circlip grooves.
Oh fascinating. It took me a while to figure out what exactly that is. It is a smooth rod used as the idler for the X belt.
What I would do is get a bearing / wheel. Take a thicker screw, nut and washer. Put the idler / bearing / wheel into the slot, then fit the screw / nut. Should work without any issue!
That said they likely had some sort of special ...
This is half of an answer. I have finally received an answer from my supplier, which says:
Long thin rod is mounted as in the photo. I do not know what is a
So the small hole is still a mystery.
Here is the photo that was included with the message (which confirms my placement, just not the orientation):
As tjb1 points out in his ...