Nylon print fails at layer 7, starts to peel off textured PEI

Bambu Lab X1 Series Troubleshooting
1

Hi Folks, I’m printing Nylon for the first time on my X1C. I’m using Overture EasyNylon, a textured PEI plate, and started with the Generic PA filament profile, before making the following changes based on what I read from other posts:

  • I turned the part cooling fan off entirely.
  • AUX fan off entirely
  • 265 deg initial layer, 270 other layers
  • I slowed the print speeds down about 15% too.

I’m using a 0.6 E3D HIGH FLOW OBXIDIAN nozzle. 0.3mm layer height, 4 wall loops, which makes it solid, and using concentric layers.

I left the build plate at 100degrees. I cleaned the surface with alcohol, did not use glue stick. Nylon was dried at 75deg C for 12 hours, sat in the dryer (off) for 6 hours before I could get to printing.

This part doesn’t have a lot of surface area on the plate, but everything was looking amazing until layer 7 (which happened to be the last layer in the test print). Right up until that layer, everything was flat on the build plate.

If I had to guess… maybe the bottom layers started to cool and caused the print to warp off the plate? Any other theories? Layer to layer adhesion looks nice, no bubbling or anything.

screenshot print
screenshot print2016×1830 288 KB

2

I thought you were supposed to use the engineering plate with glue for nylon, not PEI.

3

Reduce the bed temperature to 50/60ºC.
BTW, it may be dry, but for PA, 75ºC for 12 hours may not be enough.

1 Like
4

What’s the difference of engineering plate from PEI?

5

Welcome to the forum.

The “Engineering” plate is no longer available. It was coated in…well I don’t know exactly but it had a lighter texture than the textured PEI plate.

Here is info about the chemical makeup of PEI.

6

I can only print Nylon without lifting on smooth high temp plate with glue and 100ºC bet temp.