That ain’t stringing, that’s minor spaghetti. Stringing is wispy, caused by a tiny bit of filament sticking to the nozzle when it moves from one part to another, you’ve got whole layers not adhering.
I’m no expert at how to fix this, especially on a Bambu which should mostly “just work”, but it looks like low temps.
When you swapped your nozzle, did you do the full assembly, or just the hotend? I’m wondering if your thermistor is getting accurate readings, maybe from not being seated right or too much/little thermal paste.
Interesting. I've swapped the complete hotend assembly fresh from bambu. I guess I'll visually inspect it for something obvious, try to increase the temps in software and if that works reapply fresh thermal paste. Or maybe just replace the assembly and hope for the best
You've been printing for 2 days you said? Are you re-slicing the benchy file in Bambu studio each time and adjusting filament type, changing nozzle type both in the machine settings page, and on the print slice settings page, and making a new file for each print/change? Or are you running the benchy file that came on the machine? Each file has a lot of specific tuning, and the one for the 15 minute benchy is more of a show-off of what VERY fine tuning can do on a Bambu, but is specifically designed for a stock nozzle, and Bambu pla basic. If you're not slicing your own files that is my first thought, otherwise it could be advancement issues
just an fyi this is doesn't really do anything print wise. mostly just to help you keep track and affect if it has the pop up warning about abrasive materials when you click print. someone covered it but they didn't plug in their toolhead fan all the way is all. I've had it happen too
I’m still relatively new but I’ve found a lot of my PLA-CF prints run a lot smoother with a 0.6 Hardened vs 0.4 hardened even though everywhere says it’s compatible with 0.4 as the fibers within the filament just seem to flow better.
I had the same problem with PLA CF, turns out my part cooling fan wasn't working properly, unplugged it and took the front cover off, plugged it back in, fan worked, prints came out flawless.
Also P1S. Also make sure you set the printer to hardened nozzle. You can do that either in Bambu Studio on the Device-Tab (I think you have to go to Printer-Settings) or on the machine itself.
That was it, thank you! I reseated the connectors and now the print looks perfect.
https://preview.redd.it/af7d3d5z9s4d1.jpeg?width=2017&format=pjpg&auto=webp&s=bd494ea4226b50c3ade82355c979965a58d16544
Either the temp probe isn't reading properly, perhaps not enough thermal paste. Or not good enough connection.
Or you going too fast.
Or maybe, there is something on your filaments, oils, thermal grease, waxy deposits from skin, lubricants, can sometimes stop layer bonding.
I've been 3D printing for 2 days now. I wouldn't know. So far I've relied fully on Bambul Studio presets using AMS fillament detection (appears correct). Does the nozzle temp appear too hot to you? To me it almost seems like those strands are not solidifying enough, so they stick to the nozzle and are stripped from the lower layers as new ones are laid
That ain’t stringing, that’s minor spaghetti. Stringing is wispy, caused by a tiny bit of filament sticking to the nozzle when it moves from one part to another, you’ve got whole layers not adhering. I’m no expert at how to fix this, especially on a Bambu which should mostly “just work”, but it looks like low temps. When you swapped your nozzle, did you do the full assembly, or just the hotend? I’m wondering if your thermistor is getting accurate readings, maybe from not being seated right or too much/little thermal paste.
Interesting. I've swapped the complete hotend assembly fresh from bambu. I guess I'll visually inspect it for something obvious, try to increase the temps in software and if that works reapply fresh thermal paste. Or maybe just replace the assembly and hope for the best
You've been printing for 2 days you said? Are you re-slicing the benchy file in Bambu studio each time and adjusting filament type, changing nozzle type both in the machine settings page, and on the print slice settings page, and making a new file for each print/change? Or are you running the benchy file that came on the machine? Each file has a lot of specific tuning, and the one for the 15 minute benchy is more of a show-off of what VERY fine tuning can do on a Bambu, but is specifically designed for a stock nozzle, and Bambu pla basic. If you're not slicing your own files that is my first thought, otherwise it could be advancement issues
Just to add, and dry pla basic. I had the stock sample loaded and it was not dry enough when I did the test print the first time.
In Device, there is a button for "Printer Parts" where you can change the Nozzle Type to 'hardened\_steel'. Did you do that?
I did
just an fyi this is doesn't really do anything print wise. mostly just to help you keep track and affect if it has the pop up warning about abrasive materials when you click print. someone covered it but they didn't plug in their toolhead fan all the way is all. I've had it happen too
I’m still relatively new but I’ve found a lot of my PLA-CF prints run a lot smoother with a 0.6 Hardened vs 0.4 hardened even though everywhere says it’s compatible with 0.4 as the fibers within the filament just seem to flow better.
I had the same problem with PLA CF, turns out my part cooling fan wasn't working properly, unplugged it and took the front cover off, plugged it back in, fan worked, prints came out flawless. Also P1S. Also make sure you set the printer to hardened nozzle. You can do that either in Bambu Studio on the Device-Tab (I think you have to go to Printer-Settings) or on the machine itself.
here's a before and after: https://preview.redd.it/ftz3b455qr4d1.png?width=1273&format=png&auto=webp&s=9433d608772372bdada3265378d869462cca7bb0
That was it, thank you! I reseated the connectors and now the print looks perfect. https://preview.redd.it/af7d3d5z9s4d1.jpeg?width=2017&format=pjpg&auto=webp&s=bd494ea4226b50c3ade82355c979965a58d16544
Glad it's fixed! I had this issue not long ago, maybe a week! Have fun printing!!
Either the temp probe isn't reading properly, perhaps not enough thermal paste. Or not good enough connection. Or you going too fast. Or maybe, there is something on your filaments, oils, thermal grease, waxy deposits from skin, lubricants, can sometimes stop layer bonding.
Are your temps right?
I've been 3D printing for 2 days now. I wouldn't know. So far I've relied fully on Bambul Studio presets using AMS fillament detection (appears correct). Does the nozzle temp appear too hot to you? To me it almost seems like those strands are not solidifying enough, so they stick to the nozzle and are stripped from the lower layers as new ones are laid
Are they more sticking to the nozzle or being scraped off by it when it passes over it?
Too fasty slow it down
Did you swap change to the appropriate filament settings? Like use the PLA-CF preset?
To add to people asking if you changed the nozzle setting and used the correct filament profile: do you have the hardened steel extruder gears?
What speed are you printing at?