When i change the flow ratio for a 3th party filament to achieve better accuracy, it seems that the flow ratio settings in the filament dialog doesn’t have the same affect like on another 3d printers (e.g. Prusa). I did my usual test print in vase mode to check the extrusion whidth ans played with the flow ratio settings. After various test prints, the single wall thickness was always the same. I even turned off auto flow calibration, wall thickness doesn’t change significantly.
Does the flow ratio from the filament’s settings is ignored by the X1C?
Well, this is not my first printer. Tune in the flow setting like i described was always working. Changing the ratio +/- 0.05 or more should have an effect on the wall thinkness, surface finish and over all dimension. Maybe i do something wrong here, but i don‘t know what.
i will do the same test print using OrcaSlicer and see if it makes any difference.
I think the question was more about the combination Studio Slicer and the printer. Turning to another slicer does not answer that. I did my first prints with non-Bambu filament and initiated the flow test before each print. I would have expected that results from the flow test are written back in the config file for my specific filaments but no…
The other way round: change the flow ratio manually in BL Studio before printing should be visisble in the final gcode…
Exactly, this was the question. For me it’s also not clear what the automatic flow calibration is doing so I have turned out for this test
Obviously the “auto magic” happens at the printer after the gcode is submitted from slicer. In ohter posts i read, that the flow calibration does not correct the flow ratio but only the “linear advance”. Whatever the X2C is measuring, the corrective values applied are only valid for the actual print and are not stored in the filament profiles.
I did some more tests with Bambu Studio, and maybe i’m was wrong. I printed the same part with flow ratio settings 0.95, 0.90. 0.85, 0.80 and 0.75. It’s a bit hard to see the difference with this filament, but there are some differences (also dimensional). The 0.75 looks best to me, maybe slightly under extruded.
I also compared two gcode files with two different flow ratio settings. It seems, the settings are applied (hopefully correctly) to the gcode file (different extruder “E” values).
I also run the flow calibration test with orca slicer and calculated the new flow ratio. I turns out, that the best value should be 0.833. Printed with this on Orca the part looks almost perfect. On this picture the part sliced with Orca is on the left. So slicing parameters seem to be different on Orca (e.g. Archane mode is default).
I didn’t thought about that. The auto-magic happens after GCode generation! So to tune once the flow ratio for a particular 3rd party filament your strategy seems to be the best.
I have also found the calibration settings can be tricky to tune even using the orca slicer so I made custom g-codes for ideaMaker slicer and started tuning with it and putting the settings into orca slicer and now I’m getting way better results can not explain it but it’s working maybe a software bug
I have also been correcting shrinkage and compensation settings and now parts are sized correctly:)
Whats tricky with the 2 stage Flow calibration in Orca Slicer? I am always spot on with this procedure.
At least for the printspeed I do print the calibration with. If you go way faster in speed, like your calibration was done, you might run into probs. Then try to higher the max flowrate in the filament settings. Bambulabs 0,4er Nozzle maxes out round about 23-24 mm3.
How can the top 2 layers be off, if you calibrated right.
If you have done the 2 stage calibration process in Orca Slicer right, then the flowrate is sport on. As said for the nozzle, temperature and speed you calibrated with. If you want to print with another temperature, speed or nozzle size, calibration is obsolete and has to be done again.
If you don’t get the results you got from calibration, some settings or steps went wrong. You know that you have reopen a new plate for every calibration step you do?! Also when you print a temp tower. Placing a new tower on an existing plate results in error.
The Orca slicer had a bug with version V 1.6.1 the outer wall would only go to 0.40 line width and it has been fixed by the SoftFever team it was effecting the calibration to get the walls to bond good this was effecting the top flow calibration settings to try and fix the wall bonding problems.
