i have been working with a 0.6 nozzle and am sooooo confused about what is happening, i set a line thickness of 0.72mm, printing PLA is perfect and i always get a 0.72 wall.
but when i print using 2 different PA-CF filaments i get a wall thickness of 0.81 / 0.82 one of those filaments is the bambu own.
can anyone think why this would be as makes the parts im making wrong.
You need to calibrate the flow for those two.
just completed a flow calibration on the Bambu PA_CF printed a test cube 1 wall thick and again 0.85 when wall thickness is set to 0.72?
Stupid question - how did you calibrate your flow? and can you show a pic from the filmanent setting and your quality setting?
Sounds like you calculate the flow / extrusion multiplier the wrong way around (if it gets bigger). What line width is shown in the slicer preview?
with the Bambu filament i just use the flow calibration when printing, for the esun PA_CF i have used the fork slicer and their built in calibration tools, either way i cannot get it to be right.
Also as im using Bambu i cannot change their profile (not saying it shouldnt be for the 0.6 nozzle) but have not plaid with a new profile for that yet as the PLA is perfect.
Preview shows line width at 0.72.
Is the filament setting still the stock setting (Bambu PA-CF)?
If yes, where did you follow the calibration guide from SoftFever? With the walls so much off, I would expect that during calibration you recognized over extrusion with almost all of the first phase of the calibration activities (0.85 to 0.72 appr. 10-15% over extrusion). And for this a value of 0.96 flow ratio seems too high.
Another thing you may could try is what happens if you change the layer height to 0.3, 0.2 should work with a 0.6 nozzle - but it also is based on filament, flow and speed.
ok, i will try and do a calibration of both Filaments in softfever and see what flow rate i get and see if this can be sorted, thank you again.
I don’t use the Softfever slicer so i don’t know how it’s performed in there. When i calibrate the flow i adjust the flow ratio of the filament, based on the following test.
I print a cube of 30x30x30mm in vase mode and measure the thickness of each side on several places. I average the measured thickness and use that value to calculate the new value for the flow ratio:
new_flow_ratio = (outer_wall_thickness_in_slicer / measured_thickness) x current_flow_ratio
thank you for the tip, i will give it a go and update
ok i did that and ended up with 0.785, updated a new profile, selected the profile and printed, still the same result. expected 0.72, now measuring 0.82
did a flow calibration too before the print
So, you say that if you print with the updated profile which has a flow rate of 0.785 (instead of 0.96 you show earlier) that you still are off by 13%?
Filament is dry I assume… if there is no user-error by slicing with the wrong profile it is maybe something related to the filament itself. But anyway, I have no other clues as it seems that such a big reduction in flow rate doesn’t show a real effect.
i agree, PA-CF is dry, i might throw 0.4 back on and see if that makes any difference.
right, i have got a print now with the correct wall thickness of 7.2!!! flow ratio of 0.636!!! i have never set anything this low…
That sounds quite low indeed. But if it works, it works.
Try a test print to verify the strength of your printed object before you print anything seriously large with that filament. Just to prevent waisting your filament.
Have the same issue with 0.6 nozzle. Every filament gives overextrusion. For me it seems that there is a bug in Studio or in printer firmware which calculatues something odd. I’m on firmware 01.06.05.01 and Studio 1.7.7.88.
I have no issues with 0.4 @0.98, as soon I put the 0.6 hotend problems start and flo/calibration doesnt’ solve the issue completely.
With the 0.2 hotend i dont’ have any issues
