Print failures with PLA Silk filament

Hello everyone -

I’ve been printing these dinosaurs with Bambu PLA basic with no issues with the default build parameters. I’ve done build plates upto 25 pcs with no issues in standard PLA.

I recently tried multicolor Elgoo Silk PLA. Ive struggled to print more than 5 pcs per build without the quality degrading ablout 1/3rd or 1/2 way through the build as shown. I’m using the parameters that Bambu has preloaded. Ive also read through their suggestions and manually made the speed/tempteature/wall thickness adjustments.

Any tricks or reference materials that are out there i should take a look at?

Welcome to the community.

It’s hard to give you feedback without understanding what the intent was behind the model. If you could include a screengrab of the preview and prepare windows which would show what the slicer thought it was sending to the printer, that would help us help you diagnose possible issues and remedies.

If I were to hazard a guess, you didn’t dry your filament. Here’s an example of test print of cylinder primitive using Bambu silk filament. I’ll let you guess which one was the filament after it was dried. :grin:

Good morning thank you for the feedback. I did not dry out the filament before use, but did have good luck printing small numbers at a time.

I grabbed the following screen shots of the printing parameters.


PLA Silk 02
PLA Silk 03

PLA Silk 05

Thank you for the updated images, this helps clarify many things.

Here’s what I’m observing. You’re using the Bambu Default silk profile rather than the Generic Silk profile. Try switching to the generic silk profile.

However, this profile will only slow down the print speed and I would suspect that this will only give you marginal improvements if you have a moisture issue. Either way, ruling out moisture as a troubleshooting technique is very important even if the filament might be dry. Don’t fall into the false sense of “it was a factory sealed box”.

Consult this wiki for how-to but it is very, very, very — did I mention very? — important to weigh your filament before and after in order to confirm that moisture was present and now removed and by how much. Remember, 1g=1cc=1ml of moisture. A cardboard spool will tend to hold between 3-5g of moisture but anything beyond that in weight loss is pure filament moisture.

Other observations and questions.

  1. So the next thing here is; did you have any success at all printing a single model on the same build plate?

  2. Did you observe a difference between the models in the center of the build plate vs those at the edge? A picture as it sits on the build plate will help a great deal. It is best to hold the camera back and zoom in digitally to get a clear photo rather than move the camera to the object.

  3. Have you slowed the printer down using the quiet mode option which will slow all printer nozzle movements down by 50% at the expense of doubling time? While this is not a remedy it will give you some diagnostic data. If your filament is not correctly calibrated, slowing it down will help a lot but not fully correct the problem.

  4. Can you print any other solid object such as the cylinder primitive I did above? Also print a cube primitive too and share the photo. This will give us a clear image of what the printer settings will look like using basic geometries.

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