I have an X1C. When I was using the stock 0.4mm nozzle, I didn’t have much stringing. However, with the Bambu Labs 0.6mm nozzle installed, I’m getting much more stringing and zitting and ultimately the nozzle tearing out of zits, which is ripping holes in the surface. I’ve dried the Sunlu PETG filament I was using. Not much effect. Switched to Prusament PETG, and not much change there either. I did some tweaking, with maybe some improvement, but the problem persists.
Since there are now so many different custom blends of filaments with different properties on the market, I’m just wondering if anyone has heard of or knows of a blend which is a lot more resistant to stringing. If so, I’d like to order some.
I prefer PETG over PLA because I can print functional parts and tools that aren’t going to melt like they would if printed in PLA. If worse comes to worst, I suppose I could move on to something else entirely, like ABS, ASA, or whatever else, but preferably something which doesn’t come with its own downsides, like warping.
If your filament is dry then I’d say it’s 99% in your tuning. I usually use eSun PETG with their profile and it works pretty much perfectly. But I’ve also used Prusament and I still think it’s the best filament available for consistency and quality. Generic settings, I don’t usually change any from generic.
I have found Elegoo Rapid PETG to have very low stringing, I like the filament and have printed several spools I started with Gray after calibrating it printed great. I found the white to be a little more difficult to dial in, I need to increase the flow ratio above what the calibration recommended. I print the Rapid PETG as fast as PLA, One large model printed 20% faster than the time provided by the slicer for PLA. I have not tried printing it with the .6 nozzle yet, just the .4. I have had issues with spools being wound too tight so I re-spool all Elegoo spools now even when not using the AMS.
The only trouble I’ve ever encountered with filament windings was when they were wound in a chaotic, disorderly way. Somehow that led to it getting hung up. However, in this case, if the above Elegoo photo is true, the filaments look to be wound in a very organized, orderly way. Yet you have found them to be too tightly wound? This is the first I’ve ever heard of pre-emptively respooling filament.
Maybe the closest thing I ever encountered to a spool being wound too tightly was when I once overheated a spool while drying it out in a dehydrator. That resulted in some of the adjacent spool filaments getting pseudo-melted together just enough that the fairly weak pulling force exerted by only just my printer’s extruder was not enough to separate them–and further printing came to a halt.
Yes, they look very neatly wound and Some spools have worked fine but I have had several Elegoo PLA +, Rapid PLA + and Rapid PETG spools with the same issue. It usually starts about 75% of the way through the spool, When I saw the printer struggle with the filament one of the first times I took a close look at the filament on the spool, it was being pulled from the very edge of the spool (up against the cardboard) trying to pull the first part of a new layer off of the spool. That is why I say that I think it’s wound too tight. I have not had this issue with other brands. I recently replaced the gear in my extruder to see if that is the issue and I still had the problem with an Elegoo spool, that is when I decided that I should just re-spool all Elegoo Spools. My original extruder gear did not look worn at all and I have over 1900 hours on the printer, I do disassemble and clean the extruder every 400 or so hours of print time.
Wow! Thanks! What a time saver! If only I had known about this previously, I would have been buying eSun filaments instead of the random brands that I had been.choosing instead.
Aside from eSun, are there any other filament manufacturers who have also published their Bambu Labs print profiles also?
I haven’t stumbled upon any other manufacturers that supply as comprehensive settings unfortunately. But I’ve used the eSun profiles for other brands with success. As well, the generic profiles seem to work ok for the most part.
The Following are the settings that I used for Elegoo Gray Rapid PETG
I started with the Generic PETG Settings and I set the following:
Diameter 1.75 (No change)
Flow Ratio 0.95 per the auto calibration
Density 1.27 (No change)
Softening Temp, I raised to 91
Recommended nozzle Temp min: 230 max 260 per label on the spool
Nozzle: Initial Layer: 255 Other Layers: 255 (No change)
All build plates except for cool plate: Initial layer: 82 Other layers:80
Max Volumetric speed: raised to 24 (per flow rate test results)
I made no changes to the cooling tab or setting overrides tab
I added: M900 k0.03 to the bottom of the Filament G-code
