Been playing around with my Maslow 4 and for the most part enjoying the experience until now.
There seems to be an issue with my z axis. But just one side.
So I was moving the z axis up and down and noticed that only one side was actually moving. Swapped outputs on the controller board and problem stayed on the same side. Not controller board issue. Remove router and arm stack from sled and try to troubleshoot the z axis in question. Moves fine without the router and arm stack attached. Both z axis shafts turn like they are supposed to by hand and when given a command to move. Reassemble and can’t seem to get the problem z axis side to thread into the nut. Take apart again and look at nut. Looks good. Remove nut and thread onto shaft. Seems ok not difficult to thread on to shaft. Reassemble again. Still will not thread when installing router/ arm stack onto sled. Nothing seems misaligned. Nothing seems to be in the column that the shaft goes up into. Thoughts?
It sounds like you checked everything that I can think of and it’s all good 
This is my guess for what is going on. The POM nuts handle misalignment better than the brass ones that we were thinking of using, but they still can bind up when misaligned.
You aren’t able to rotate the shaft by hand and have it thread in, right?
Yes. It starts to thread then not able to turn by any means.
Start taking more stuff apart?
Donavan Rekstis wrote:
Start taking more stuff apart?
Yes, I would take both nuts off and see if they move freely on the threaded
rods.
David Lang
So I took more stuff apart. Tried the nuts directly on the shafts and no issue there. Free movement by hand and under power @dlang . Reassembled testing z axis several times during reassembly both by turning the shaft by hand and under power. All good. Did not find anything out of order. Wonder why the one z axis would quit working?
Now have new issues @bar I updated from V0.83 to 0.84 but config still shows .83.
And while I was fighting z axis issues the bottom left arm would release an insane amount of belt while moving the machine around. While jogging and running a job with the router Z up and router off. Basically just motion. So while the sled was apart I rebuilt that arm in particular. I also swapped arms keeping them labeled as to their original position before disassembly. Arm in question is somewhere else and functioning normally but new arm is showing same issue. Its a LOT of belt coming out when it moves.
Let me know if I need to start new post with this issue or continue here.
Off to search the forums.
This is a bug. Someone actually just figured out what I was doing wrong that was making that number be one behind so in future releases that should be fixed.
This sounds like a calibration issue to me. I would bet that running the calibration again will fix that one.
No need to re-enter your frame size or anything. Just Retract All → Extend All → Calibration and I bet you will be good
Yes. I think so. Maybe? I did run calibration and babysit the 2 bottom belts like a hawk. Made sure they did not slip or anything funny. Machine calibrated no problem.
Played around with the Z axis and learned how that works. I think. I must have 'cause I cut stuff today. Well engraved but anyway made dust.
I was able to do some test cuts today. Man that felt good!
Also maybe an oops on my part- somehow the config got changed to horizontal. Thats not good. Machine is vertical with about 20 degrees tilt. I’d like to do a little more but space is a constraint.
Had to let the machine sit for a bit but now I’m back at it. Got some weird things happening.
1st- the configuration seems to keep changing on me. It switches from vertical to horizontal on its own? I don’t think I’m doing anything to cause the switch but when looking at other issues I go into config and there it is- wrong orientation. Physically the machine is in the vertical position.
2nd- Z axis is acting strange. I have the Kobalt router Z Axis spacers installed. I’ve run calibration with them installed. Is that going to cause problems? Next is once the machine is ready to go I can jog all three axis with no issues but when I go to run a job the bottom Z Axis stepper stops moving. The top stepper works so the router becomes skewed. Thoughts?
After reading the Wiki Do I need to alter something in the yaml to account for the spacers?
I believe that I have the arms in the correct stack order. Looking down and naming them from the top down I have TR, BL, TL, BR with TR being farthest from spoil board and TR being closest.
Donavan Rekstis wrote:
2nd- Z axis is acting strange. I have the Kobalt router Z Axis spacers installed. I’ve run calibration with them installed. Is that going to cause problems?
When you calibrate, you want the Z axis all the way down, so you need the
spacers in and the cage all the way down against that.
you also need to make sure that the Z offset values in the config are accurate
and account for the spacers.
David Lang
Horizontal is the default. So, if your ESP32 has a panic attack and loses its mind (ie its config) then, “by default” it will switch to horizontal, if that config is somehow saved after that point (something that should not happen, but I haven’t poked around that code for a few months) then it will overwrite vertical with horizontal in the config file itself.
That is how I ran the calibration. No bit in router and all the way down against the blocks.
Are my arms stacked in the correct order?
How/ Where do I look at the Z offset values? What do I want them to be to account for the spacers? Spacers are 14mm I think? I’ll measure them for correct value.
Thanks!
Donavan Rekstis wrote:
How/ Where do I look at the Z offset values? What do I want them to be to account for the spacers? Spacers are 14mm I think? I’ll measure them for correct value.
the values are in the maslow.yaml file, you can edit the file directly or use
the menu in the gui to set the values and save them to the file.
These are the Maslow_xxZ values (xx being the two letter code for the arm)
this should be the distance from the top of the belt at the anchor to the top of
the belt at the arm
David Lang
Where does the sled need to be when these are measured?
Donavan Rekstis wrote:
Where does the sled need to be when these are measured?
As far down as it can go (where z stop is, z=0 for the machine)
David Lang