Hello! Hoping the community can point me at a solution to an issue that has cropped up on my X1C.
I started printing a couple CanFinity units, and they are large enough that they use almost the whole print bed (minus the exclusion area). However, on one of my X1’s, it seems that either the print head, or bed are off-set to the left a couple of MM.
I created a small model to test the alignment. This is on the X1C that is off-set:
And this is the same file, in the same copy of BambuStudio on my second X1C (Yeah, pay no attention to the quality, that build plate needed a bath real bad!) z
And it prints just fine here (As did the Canfinity units).
Filament is Bambu PLA Basic
To eliminate as many variables as possible, I used the stock 0.20 profile, with 0.4 hotends on both, and a second run with a 0.2 using the .14 profile just incase the 0.4 replacement was a dud.
Nothing custom, auto flow rate calibration on for both prints.
Troubleshooting I have already tried:
Swapped hotend to a brand new 0.4, and 0.2, all printed the exact same as the picture above (Smooth Plate).
Cleaned the carbon rods, as shown in Bambu’s maintenance video on the wiki (99% ipa, lab quality dust/lint free microfiber brand new) including the initial step of loosening the heads, testing the tension, and carefully re-tightening.
Full calibration post cleaning
As long as my print isn’t on the left-most edge, it is printing perfectly, however for the odd model that needs the full width, it’s a no go.
The bed might have been installed with a slight offset, though most of the adjustment available at the six mounting screws is front-rear rather than left-right.
Thanks for the reply!
That’s why I installed and tested a brand new 0.4 and 0.2 hotend, just incase the 1st one was bent. And did the 0.2 just in case the brand new 0.4 was bad from the factory. I’ve since tested all 3 hotends on my second X1C and they are all 100% there.
I did not try a manual bed level, I’ll run through that later today (didn’t think this was it as I thought that would cause issues on larger prints, and outside of the largest (full width, like the canfinity) they print just fine).
I think the printer references the front right corner for setting X and Y to zero. Maybe something is in the way there? Some waste filament or similar? You can watch the had referencing when it bumps in the front right corner twice, once front, once side.
Edit - Seems I somehow missed the post right above me that said the same thing. I slightly expanded on the idea so I will leave the post up for future reference.
Make sure that the problem printer can fully home in the front right corner. It seems to be setting the home point a little early. The printer doesn’t home with a switch, it uses sensorless homing which means it sets the homing point when it encounters resistance in that axis. A slightly shorter ptfe tube can cause this, or a small chunk of filament wedged in the corner. Take the top off and manually move the head to the right front corner. Often this will show what the problem is. Luckily you have more than one machine so you can compare them.
Just checked it, all clean. Was really hoping I’d find a little purge that got away from the chute (This has happened to me before!) but sadly not this time!
You were entirely correct. The PTFE tube being just a bit too tight when it was hitting that corner. Replaced it with a slightly longer tube and we are golden again! Thank you!
z