[Solved] Assembled Prusa i3 MK2 - Calibration Point Not Reachable (with Connector Damage)
Hello All,
Just received my assembled i3 MK2, from Filaments.ca.
Following the manual and a recent PR YouTube video ( ), I have observed that the probe was not within the (first/home) "left-front calibration point". On a positive note:
- Heat Bed grid lines 'appear' to be parallel with the X-Axis rod(s).
- Have successfully updated to the latest firmware (FW 3.0.6), as of 08 Aug. 2016.
- Bed and Nozzle do appear to be heating well, though no successful prints were conducted.
After running the "XYZ Calibration" from the printer menu, the LCD had the following message, after completing the process:
XYZ calibration compromised. Left front calibration point not reachable.
(Q1): Which Y-Axis frame rod do I need to adjust if the front-left calibration point is off-center by about 1/3, at the 11 o'clock mark (or approx. at 120 degrees) - relative to the center of the "left-front calibration point"?
Thank you all for your time and attention.
P.S.
[Also, I have observed damage to the shipping box and eventually found damage to the Heat Bed connection cover (pictures attached). The cover is a simple fix, and I assume the STL can be download from PR, so no problem there. The puncher-holes through parts of the box were taped over, so I don't know what happened to the shipping box. The locations of holes do correspond to the damaged HB connector cover. (Q2): Is this the standard box PR ships their i3 MK2s in? Just curious.]
Assembled MK2.
Re: Assembled Prusa i3 MK2 - Calibration Point Not Reachable (with Connector Damage)
No that is not the standard box used for shipping by Prusa Research.
I would guess that a kit has been shipped to your suppliers who then built the printer for you. You should also have a test print stuck to the heatbed (I believe the Prusa logo print).
In my opinion, you should contact your suppliers and advise them of the shipping damage and point out that you are unable to correctly calibrate the printer. Pre-built printers should work out of the box without any issues like this.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Assembled Prusa i3 MK2 - Calibration Point Not Reachable (with Connector Damage)
Original state of the printer can be identified by serial number ( silver sticker on the back of the frame above RAMBo cover ). It has a format like CZPX2016X003XC02059, where C means assembled printer by Prusa Research, K means kit. If this printer has K in it's serial number then it's the case mentioned by Peter -> kit assembled by third party, not by Prusa Research.
Re: Assembled Prusa i3 MK2 - Calibration Point Not Reachable (with Connector Damage)
Hi,
Regarding the probe alignment, you could have a look at this guide there: http://help.prusa3d.com/mk2-movement-calibration/172660-p-i-n-d-a-probe-misaligned
Obviously, the delivery was done properly, you should not have to fine tune this on a prebuilt printer.
I'm like Jon Snow, I know nothing.
Re: Assembled Prusa i3 MK2 - Calibration Point Not Reachable (with Connector Damage)
No that is not the standard box used for shipping by Prusa Research.
I would guess that a kit has been shipped to your suppliers who then built the printer for you. You should also have a test print stuck to the heatbed (I believe the Prusa logo print).
In my opinion, you should contact your suppliers and advise them of the shipping damage and point out that you are unable to correctly calibrate the printer. Pre-built printers should work out of the box without any issues like this.
Peter
PJR,
- Thanks for confirming my question about the shipping box.
- Yes there was a "PRUSA" test print in the center of the bed, so that is a good sign, and it took some careful effort to get it off as I did not want damage the PEI surface.
- (Please see response below to alexandr.k.)
Original state of the printer can be identified by serial number ( silver sticker on the back of the frame above RAMBo cover ). It has a format like CZPX2016X003XC02059, where C means assembled printer by Prusa Research, K means kit. If this printer has K in it's serial number then it's the case mentioned by Peter -> kit assembled by third party, not by Prusa Research.
alexandr.k,
- Thank you for directing my attention to the PR Data Label on the back of the printer frame. Based on the Data Label (please see the attached picture) I have an assembled machine, by Prusa Research; so that is also a good sign, that it was not a (kit assembly) hack job by the Canadian vendor, where I bought the machine.
Hi,
Regarding the probe alignment, you could have a look at this guide there: http://help.prusa3d.com/mk2-movement-calibration/172660-p-i-n-d-a-probe-misaligned
Obviously, the delivery was done properly, you should not have to fine tune this on a prebuilt printer.
christophe.p,
- Thank you for the link to the guide.
- Indeed, the delivery (and/or the handling at the Canadian vendor's store) was poor at best, and as a result I shall avoid doing any more business with the retailer.
-------
(Q): Since I have a PR assembled Prusa i3 MK2 (based on the data label), should I be contacting PR customer service with this matter or try to fix it myself? (Based on past experiences.)
Assembled MK2.
[Solved] Assembled Prusa i3 MK2 - Calibration Point Not Reachable
Hello All;
I don't know if a broken 'cable tie' and a displaced bushing, could be the cause of my issues, but here is an additional finding.
(Q 1): Now I presume that to resolve this finding I need to disassemble the heat bed or is there an easier way?
(Q 2): If I do have to disassemble the HB, can I do it with out compromising the PEI foil by holding the hex nut-spacer found between the carriage and the HB or do I need to puncture the PEI foil with a hex key?
Thank you for your time and attention.
EDIT: I think I just answered my own questions, after looking at the Kit Assembly Instructions for the MK2: http://manual.prusa3d.com/Guide/7.+PSU+%26+Heatbed+assembly/109
EDIT 2: The broken cable tie and displaced bushing were the culprits, causing the failed 9-point XYZ calibration. After re-seating the bushing and replacing the broken cable tie, I am happy to report that the XYZ Calibration has passed:
XYZ calibration ok. X/Y axes are perpendicular
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Sincerely, thank you all for your help, time and attention, plus I learned something.
Assembled MK2.