X axis seems to stutter during circular ramps

Ok, I am not sure where to go with this issue. Hoping someone can give me some ideas.

When I first got my 1F x50 Journeyman, I created a spoilboard that had over 160 dog holes without a single hiccup. Great, no problem.

Now, I was getting ready to create 4 dog holes in some material using the same f360 file (just selecting only 4 out of the 160). While air milling, it gets part way through the hole and the X-Axis starts to stutter. I thought, ok, maybe something with the ramp gcode. So I changed it to 1/16" step downs rather than a ramp. Still seems to be stuttering part way through the “air” stock. I then tried slowing the cutting speed down from 290ipm to 100 then 50. After finishing the air carve, my X axis is off and significantly moreso the slower my cutting speed is set. I even tried changing the starting Z axis to see if it was at a certain Z point where it begins, but it always seems to be at around 50-60% of the hole depth when it starts to stutter.

If I use the controller, I can’t get it to stutter (now, of course, I can’t move it in a circle as smoothly as gcode), but no matter how I move it, I can’t get the X-Axis to stutter.

Anyone have heard of this or have any clues how to isolate where/why this is happening?

I am afraid to do anything on the 1F now because I don’t trust it will remain true when I actually try to cut something.

Did you clean and oil the ball screws lately?
I had the same problem and couldn’t believe the amount of
crap that gets in there.
Best of luck,


I will try that. I did the full cleaning and oiling a few months ago, but havent really done much carving since then (I have been redoing my dust collection system and redesigned and printed my dust boot). This is a hobby machine so I really dont get to use it as much as I would like. If I have more than 50 hours on it since I purchased it, I would be surprised.

I have the ball screw wipers that I printed with TPU on them as well.

Anyway, thanks for the suggestion, I’ll update here if that fixes anything.


Ahhhh…the smell of 3 in 1 oil. Lol

Ok, just re-did all the cleaning and oiling of the rails and ball screws and oil ports etc. Wiping it down before i started the process was pretty clean, but went ahead anyway.

Unfortunately it still stutters. :pensive:

I did record it (before and after re cleaning) and can post it if that helps.

Do you have ramping turned on? If so, turn it off.



Best to get in touch with Onefinity support. The same thing happened to me and my fix was to clean and oil. I have since then installed a dust boot and haven’t had any problems afterwards.

Good Luck,


I did end up contacting support (and they are super by the way). It was suggested to turn off the ramp function in F360 (which I thought I had tested before So I changed it to 1/16" step downs rather than a ramp. Still seems to be stuttering part way through the “air” stock.

I tried it again using 1/8 and 1/16 multiple depths rather than a ramp and now it works fine. I also downloaded and tried the same (although it operates differently) thing in VCarve and it also worked fine.

If this is an F360/1F compatibility/interoperability issue, then I feel much better that this isn’t a hardware problem. However, I am a bit concerned that there are other oddities to watch for that I don’t know about. Is there a list anywhere that points out the “gotchas” to keep an eye out for?

Well, at least I got a good cleaning out of this exercise! :rofl: :rofl:

Definitely a Fusion issue and not a machine issue! :stuck_out_tongue:

I don’t know about Fusion, but I had a similar problem with an imported DXF file that was caused by too many nodes in the GCode. I edited out a bunch of nodes, and all was well.

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