X1C Printer: Troubleshooting Inconsistent Prints on Large Parts

Dear community,

I need some help with a printing issue. I’m trying to print a chessboard divided into four parts. The dimensions of each part are 217x217x15 mm.

Printing details:

  • Printer: X1C with AMS
  • Nozzle: 0.4 mm
  • Printing profile: 0.16 mm (High Quality)
  • Infill density: 10% (sparse)
  • Infill pattern: 3D Honeycomb
  • Filament: Bambu PLA Metal and Bambu PLA Silk

Model information:

Here the 3mf file:
Chess_Board.3mf (397.0 KB)

The main issues appear on the left and right back sides, as well as on the surfaces with letters and numbers.




After the first failed attempt, I performed maintenance: cleaned and lubricated rods and lead screws (carbon rods only cleaned :blush:), tightened all belts, and completed a self-test and calibration.

I then printed a test part in the left-back corner (using a 0.2 mm Standard profile) with good results.



However, the second attempt to print the chessboard still produced the same issues in the same areas.





I’m running out of ideas at this point. Does anyone know how to solve this problem?

In the meantime, I’ve successfully printed other smaller models without any issues.

I appreciate any advice you can offer!

Are you using any form of glue on the build plate? It looks like that corners are lifting ever so slightly.


Notice the layer lines on the corner walls? That’s signs of lifting, the top layer is just a result of the build up.

On a print that size you are going to experience shrinkage with just about any filament, that’s why I’d suggest some glue and or brim with 0 mm gap. Mouse ears or discs would work too,

2 Likes

I’m using Bambu stick glue for each print. Before the second print, I washed the plate and carefully applied the glue. I didn’t use a brim. I’ve had some experience with models that have bed adhesion issues, but this time it seems different. The model prints fine up to approximately 13 mm, but the problem starts when the printer begins the cover layer over the infill, specifically at layer 88.

May be off track, but it looks to me like a flow calibration is needed. And perhaps a bed leveling.
From what i’ve heard the silk filament is actually a blend of PLA and TPU (just heard that so im putting it out here) so it might be that the temperatures are off. I do recommend using Orca and do a temperature print.
Did you use IRONING by any chance? You might need to test that out according to the filament… there are tests out there for it.