I found these to take care of emi issues.
I read through this entire post and turns out I was having the exact same issue on mine, only on the left side. OF support had me do the same things but had no real results. I ended up loosening the 17mm ball screw nut on the front of the left Y rail about a quarter turn and it seemed to solve the problem for a couple months. The problem returned just recently and had a couple of lock ups and loss of position again. You mentioned that OF was taking care of the problem for you finally. Could you let me know what finally solves it? Thanks
I loosened up the two screws that hold the ball screw into the moving part of the axis. Then I put some thin shims behind the shoulder of the ball nut and this seemed to work. Support did send me a new axis though…
Thanks for the info.
OF sent you a fully assembled Y axis rail?
Yes, they sent an assembled right side.
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Well pretty good of them.
I wonder if they’ll do the same for me as I’m having the exact same thing happening.
When I saw your video, I felt like I was watching my machine. Lol
So they are sending me a new Y rail assembly. Just curious if you installed your new one yet and if it solved your problem.
By the way, I was just in the middle of a huge cut, 29x29 and it lost its position
I did install the new rail and it did solve my issues. I have not had a loss of home failure since then. Glad this will be behind you. Gotta love OF tech/customer support! Best in class for sure!
Good luck to you on your future carves!
Hey Eric, hey all,
after carefully having followed the whole thread I still find this disturbing. Can you, or can someone say what really is the cause of this issue? If loosening ball nut screws or putting shims behind the shoulder of the ball nut makes the issue better, is the gantry block not milled square? Or is the ball nut shoulder not square? Or the ball nut of minor quality? Or the ball screw warped?
I didn’t actually take apart my right side Y axis to determine the issue. That would have been my next step if I didn’t get resolution from tech support/ customer
I can say that the ball nut did fit into the gantry tightly. Actually the fit was considerably tighter than the left side ball nut fit. I had to loosen the ball screw nut and pound the end of the ball screw to get it out of the gantry block.
I don’t believe the issue was bad machining, though I don’t know for sure. My guess is that it was a few small issues, like the smallest allowable size gantry hole with a maximum allowable size ball nut exterior.
I did ask tech support to let me know what they found with my right aid y axis but have not heard anything in this regard.
My issue has not returned since I swapped out the right side y axis.
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I’m having this exact same issue. I have more failed cuts than successful ones. I’ve eliminated dust being the easy explanation and I’m still losing home on long cuts. I’m going to try these proposed diagnostics and resolutions tonight.
Jason - any updates on this?
We took about a week or two off on cutting to order in a dust boot and upgrade our dust collection system as the general consensus from the community last time was that this was a dust issue. We have 3D printed ball screw cleaners, draped some fabric next to inside of the rails, got a 3 HP dust collector, etc. My buddy booted her up today for the first time to run a simple sign cut. Just sent me this:
Still gathering thoughts on what happened but at first glance it looks like she lost Z and just walked through the piece.
This continuously happens. I’ve already had to replace a spindle because the last time it did this it destroyed the bearings. My friend and I just want to cut simple things I make in Fusion… My old Shapeoko never had these issues. Sorry, I am beyond frustrated at the moment. Any assistance would be appreciated.
I don’t see any email to support@onefinitycnc.com? Why frustrate yourself before contacting us?
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I’ve definitely emailed support before, around February 2nd, and was given the aforementioned dust advice along with a sort of common solutions step by step guide. Are you referring to emailing you about this issue today? It just occurred and the community is a great resource for advice?
Only see an email about a seized motor.
Is your router/vac on a separate circuit than the controller/screen? Do you have drag chains?
Yes, the spindle is on a separate system since it is 220V. The dust collection system is on the same circuit. Before going down the rabbit hole of dust being an issue I can tell you that it isn’t. The system was working fantastic while running the cut, everything clean and operational, just as it should be. Yes, we have drag chains set up as well. This machine has truly been nothing but issues. To date, I am not seeing how it was rated so high in its class. I am hoping that we can get proper educational responses so we can resolve this constant failure after failure that we are experiencing.
Just to add more clarity to this problematic machine, I personally maintain the machine prior to EVERY cut, cleaning and applying oil to ensure the proper operation of the machine. More importantly, I had a new electrical panel professionally installed along with my house rewired so that I could ensure our workshop is fully functional.
How many more thousands of dollars do we need to pour into this machine so we can get the advertised results?
Please advise.
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I emailed support describing what I thought was a seized stepper motor and was told it was a skipped step from failing to keep the machine free of dust. Then we eliminated dust being an issue and are still experiencing failures. I mean, I’ll send you all this in an email…
You should have kept emailing support as you never responded to supports email.
Support is done though email, not the forum.