Is there any reason we cant use a .6mm nozzle? I get that it will use a little more filament but it will also increase the print speed quite a bit. A .6mm with a .3mm layer height is what I was thinking but wanted to be sure there wasn’t some other downside that I wasn’t realizing.
Hi there, I had the same question and as I was just at the second plate, I decided to switch to the .6mm. The amount of filament went up 50% and the part I was going to print (left wing) reduced only from 14h05m to 13h45m. I played a bit with parameters but decided to print this first one with the project standard options - mainly because I’m tight on filament here. But I’m looking forward to know if that would work fine too.
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On my Printer it seems to change a little better
Plate #1
.4mm Nozzle
426.53g Filament
13h 18m
.6mm Nozzle
477.83g Filament
10h 51m
Granted I am not doing all of my printing on a Bambu Printer. This is on a QIDI Q2
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Hey yall!
great question. Someone on MakerWorld is also working on this, and will post a .6 profile soon, which I will look at incorporating into the main build file.
As long as the strength remains the same, and all parts fit, there is no issue using this larger nozzle.
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I have all of the wheel parts printed from a Bambu A1 with a .4mm nozzle. I am about to test one wheel connector on my QiDi Q2 with a .6mm nozzle and see how it fits. Will report back
Ok finished the print of the single connector piece for the wheel. Print came out great. Was a tight fit but went in no problem with a rubber mallet. If Master P can use one I don’t see why I shouldn’t 
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I just switched the nozzle in one of my A1 printers over to .6mm One thing I noticed was as soon as I changed from .4mm to .6mm in bambu studio it went from 2 walls to 4 walls, and from 15% to 25% infill. Once I changed that back to 2 walls and 15% infill it lowered the filament usage and time quite a bit. I know you said you adjusted some parameters but I am not sure which ones so wanted to point that out to you.
Just looking at plate #1
.4mm - 428.72g - 17h42m
.6mm - 479.20g - 15h50m
So not a ton of time savings there but also not a lot more filament, and should be a stronger part
Its also being talked about on MakerWorld to go down to 10% infill with the .6mm nozzle since the thicker walls will add more strength than the infill will. If you do that it saves even more time and filament
10% infill for plate #1
.6mm - 403.59h - 13h35m
I am going to hold off on reducing infill for now until @MakeGood_Noam says he agrees with it.
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Love this idea! Correct, we wanted to stick with .4mm as it’s pretty standard for users but a .6mm option has some appealing benefits. I have a few .6mm nozzles for my machines and can try a few parts as well.
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I get that completely, and for sure you should always have a .4mm option.
I agree completely and so far all the parts are fitting together great. Even with some printing with a .4mm and some with a .6mm
That’s great! I am really curious about the lower infill option of 10%. That would give a time and filament savings from what I am seeing.
I forgot to mention something.
(I asked Gemini to help me write this as I’m a noob at 3d printing)
In an A1, I made ONE attempt printing with a 0.6mm hardened steel nozzle and PETG-HF, and it didn’t go well. The main issue seems to be the low viscosity of the HF formula combined with the larger aperture. I experienced severe oozing during travel moves, which created blobs that the nozzle eventually collided with, causing failures. It seems the standard profiles can’t contain the ‘runny’ nature of the HF material in a 0.6mm nozzle without extensive tuning. I switched back to 0.4mm and it printed perfectly.
Soon I’ll finish my PETG-HF and will try again with 0.6mm and regular PETG.
I have never used Bambu PETG-HF so I cant comment on that. I will say I have not heard good things about it. I use mostly Elegoo or Sunlu for PETG. But I will say other than projects like this, I tend to avoid PETG lol. 90% of my printing is PLA with the other 10% being PET-CF
I tried printing on my Bambu A1 with a .6mm nozzle using the .6 Print profile on Makerworld but having some issues. The walls are printing fine but the infill isn’t printing thick enough. As the part gets higher the infill is very concaved into the part. I switched back to the .4mm nozzle and the original print profile and its printing fine now. I previously printed a .6mm part from the original print profile by just changing the nozzle size, and resetting the walls to 2 and the infill to 15%. When this print finishes I am going to try it again with the .6mm doing the changes my self to see if I have any more print failures.
The .6 profile has not been tested or endorsed by MakeGood. I asked the poster to make that clear in the title of that profile. We recommend sticking with the .4 until that profile has been fully tested
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Yes I understand that completely. I was trying to help test it. I believe it was a mistake of my own but not 100% sure yet. I will be running another print here in just a few minutes and will report back.
Did you get the A1 to print all the plates with the .6 nozzle profile?
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No. I went back to .4mm on the a1. My Qidi printers have zero issues with the .6mm but every time I tried it on the a1 the infill would end up “sunk in” and the higher it got the worse it got. Tried slowing it down. Lowering the max volumetric flow. All kinds of stuff. Finally just got frustrated wasting filament and gave up
What vendor filament ?
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Sunlu PETG
Had no problems with it on the .4mm. Or with .6mm on my other printers
I think it depends on the type of filament you are using. I’ve used .6mm nozzles on other prints with Bambu Petg-HF with no problems. HF and high performance PETG filaments are made to print faster and will generally print fine with .6mm nozzles as long as you aren’t printing at Ludicrous speeds.
I had troubles because I tried this with a non-HF PETG. That filament underextruded and the part was brittle and weak. Now that I’ve completed a full TMT with the .4mm nozzle I have a better idea of how everything should look and fit. I will try testing some parts with .6mm once I get my hands on some more HF filament.