Need Help Troubleshooting X1C

Bambu Lab X1 Series Bambu Lab X1C
1

I have never had any problems with my X1C, I don’t print much, but it is usually trouble free. Today I tried printing a model I made and no bed adhesion at all, all strings. I cleaned the bed again and tried to print a benchy. Same issue, no bed adhesion, or at least seems to be part of the problem.

I flipped the bed and tried using PETG-CF instead of PLA and same issue.

I printed twice about a week ago with no issues. Nothing has changed in my setup at all. Not even sure where to start.

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2

How are you cleaning the bed? Also make sure there is nothing between the bed and the plate that is throwing off the bed leveling. Are you doing the automatic calibration? I don’t see it printed in the picture.

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3

Clean the bed with IPA and check the bed temperature. Don’t print PLA on the Enginering Plate (not recommended).

4

Cleaning the bed with Windex, never been a problem. I am doing automatic calibration. Some more pics here.

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5

Recently updated firmware perhaps? A factory reset and power cycle can sometimes fix issues that don’t make a lot of sense.

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If nothing works at all, which has already happened to me (nozzle was too close to the cool plate and had the right distance to the engineering plate), I also go back to the roots.

When you reset the printer, you lose the K values for the filaments, for example.

What I would do, certainly many of the things others have already suggested:

  1. Buy a spare build plate (safety, delivery takes about 3 days), in case anything unforeseen happens I have spare.
  2. Clean the old plate. Remove grease. Do not use any aggressive agents that could damage the plate.
  3. Clean the outside of the nozzle and silicone sock as thoroughly as possible.
  4. Clean the inside of the nozzle. So far I have been content to flush it properly with a filament, I then like to use normal, white PLA. Filament can be fed via the display. Set the temperature of the nozzle to a high value so that everything inside becomes soft, I have already reached the upper limit of the nozzle. Then push the filament through properly. It can often be observed that black particles come out from time to time, sometimes this takes a few seconds longer. You can also do a cold pull.
  5. Dry the filament that I want to print (I have already had success with a short time in the oven and with circulating air). I would then also use a normal PLA to try it out.
  6. Recalibrate the printer after switching it on and run a self-test. On such occasions, I also clean the carbon rods and re-tension the belts.
  7. Apply glue stick, if possible, especially at the front of the plate where the filament is calibrated.
  8. Finally, I print a smaller object like a Benchy with the PLA (white) that I already used for rinsing. In case there are still impurities in or on the nozzle. And of course to see if it works.

Just to be on the safe side, if I’m not sure whether something is wrong with the printing plate, I use a new plate for testing. I can then switch back to the old plate later.

Best regards!

8

Thanks for the detailed reply. I think part of the problem might be the temperature where the printer is located. It is in my workshop which is probably 5-10 degrees Celsius lower than last week. Not sure if that matters, but it would seem to correlate with the poor bed adhesion. Gonna try some glue stick today and see if that helps. If so, I will probably try an increased bed temperature maybe.

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UPDATE: Looks like the main problem was bed adhesion. I think it was caused by the temperature in my shop being lower due to cooler temps outside. I guess the windex method was not working so well. I cleaned the hot end, applied glue stick to my cold plate and ran a successful benchy. Live and Learn, I am wondering if a higher bed temperature might help with bed adhesion when temps are a bit lower in the shop. We are talking 61F vs normal 70F most days.

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