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Machine Probe Error
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Description

My Beta Machine (0002) is missing all probes on the front right washer. It probes onto the bed near that washer instead. @Steven asked me to try with different firmware, both .101 and .98 display this failure. My other 2 Betas are not failing this probe tho the probe location is very near the edge of the washer. I believe it is failing due to something mechanical but I do not know what. Both @tutley and @kent checked the bed positioning on my machine and said it was good.

Event Timeline

anolen created this task.Mar 18 2019, 9:08 AM
kent added a subscriber: kent.Mar 18 2019, 9:10 AM
anolen updated the task description. (Show Details)Mar 18 2019, 9:13 AM
anolen added subscribers: tutley, Steven, marcio.
karrad added a subscriber: karrad.Mar 18 2019, 9:14 AM

I had issues making the front right probe while using the single extruder tool heads as well. I would like to move that probe point out about 2mm if possible.

Yeah that one could be moved bit, my one machine (0002) has something in addition going on but overall, I agree with the 2mm move of that probe point.

west added a subscriber: west.Mar 18 2019, 12:20 PM

I think we should look at the mechanical on the machines before changing the FW since the majority of printers are probing fine. Except @anolen 's machine, its doing weird things

Just to get this logged, I have seen this now on 3 separate quivers all when probing front right corner with single extruder tool heads.

T6250
T5054

While some are passing without the change, is there a reason we do not want to add the extra 2mm of wiggle room for this?

logan added a subscriber: logan.Mar 19 2019, 7:07 AM

On QB2, it isn't the E2 harness interfering right?
Would we even be able to move 2mm further to the right? Last I had a beta unit it was very close to the end of travel already.

west added a comment.Mar 19 2019, 8:33 AM

So @anolen 's machine is working fine now. The retaining ring on the x double bearing holder was installed backward making the x carriage travel 1mm extra when homing. With the retaining ring flipped to the correct orientation, the nozzle now probes on the washer

anolen added a comment.EditedMar 19 2019, 8:49 AM

Thank you @west, it does touch the washer now instead of the bed. All my machines are probing now, that front right is still close to the edge but it makes contact.
To adjust the positioning we could move the probe location -1 or so in the Y, this will save room in the X so we aren't trying to get more room there.

EricNugent closed this task as Resolved.Mar 22 2019, 8:51 AM
EricNugent claimed this task.
EricNugent added a subscriber: EricNugent.

Seems to be assembly related, closing for now. We can re-open if the software solution ends up being needed for future operation.

anolen reopened this task as Open.Mar 25 2019, 11:18 AM

This machine is still missing the probe. I had 2 prints with contact and now its hitting the bed again every time.

I inspected the machine and was able to determine a couple of mechanical factors that might be contributing to this issue:

  1. The Y bed tables were not set the correct distance from the y motor plate. This will cause the probe to hit the upper left portion of the front right bed washer.
  2. @anolen Was there to verify the motor cables for E2 were not properly routed through the cable channel. This will inhibit the maximum x travel distance and will exaggerate the probing issues.

After using the jig to ensure the correct spacing on the bed mount tables and correcting the unkempt cables in the E2 harness, the probe made contact with the flat of its nozzle touching the flat of the bed washer. It is very close to the edge though, I think @anolen 's comments earlier about adjusting the bed position to remedy this situation would be beneficial in the long run.

logan reassigned this task from EricNugent to Steven.Apr 15 2019, 2:34 PM
Steven reassigned this task from Steven to EricNugent.May 22 2019, 9:40 AM

@EricNugent is this issue continued to be seen at calibration or has the calibration procedure started to correct for it? Wondering if we can close this if this is not a continued issue.

@Steven Occasionally we run into a machine or two that aren't correctly spaced in the Y axis which is typically a quick fix. We are probably fine to close this out.

DaniAO closed this task as Resolved.May 22 2019, 11:14 AM
DaniAO added a subscriber: DaniAO.

Going to close it for now and we can always reopen it.

Thanks!