14 seems kinda low for PLA with a HF nozzle, how is this the max?
I started to do some math:
The last layer on this model has its outer/inner wall set to 476mm/s.
As far as I’m aware, to get the MVF, you would do Speed * Layer Height * Line Width.
In this example, the Layer Height is 0.20mm, and the Line Width is 0.42mm
So: 476 * 0.20 * 0.42
This would result in: 39.984mm3/s
Why does the preview show 14.29?
Am I missing something?
Sidenote: My PLA Silk passed the first test completely, so I changed the line width to 0.6mm (hoping to reach a higher max) and it completed that one completely too? What’s going on?
The preview does not show an increased flow with increased height. Most likely, intermitted speed modifiers were removed?
As for finding the root cause of the low speed: Did you compare the layer time preview to the Max fan speed threshold Layer time? That setting is also used by the slicer to slow down a layer.
I’ve also been trying to figure out how to set one of these tests up. I’m running into something different though. My previews are showing the flow going up to about 43 but about half way up the speed caps out at like 173mm/s. I couldn’t get it to change no matter what settings I changed.
I’ve tried setting it up with a non Bambu printer profile and then switching back, but that didn’t work either.
I’m really surprised Bambu hasn’t given us a MVS and temp tower test in their calibration tab yet.
So I added another printer (I choose Qidi Plus 4) it loaded the new printer. I went back to the H2D and it looks like all the quality settings had been reset, but when I checked the flow, it’s actually the correct calculated value!
But I don’t want to print a solid model, so I remove the top/bottom layers, still the correct values. However, when I remove the infill, the flow drops back to the incorrect values. Something about the 0 infill changes everything.
Do you think you could link me to the flow test you’re using?
I should’ve looked a little closer when checking out @EnoTheThracian’s suggestion. The problem wasn’t Max Fan Speed Threshold, it was actually the Slow printing down for better layer cooling setting. It essentially just overrides the Max Volumetric Flow setting for better cooling. Makes so much sense in retrospect but yea, solved the mystery.
There are Bambu studio builds available that add the orca calibration menu back. Or you can just change your desktop scaling percentage and it will show up lol
The Calibration menu was always there, it just only has 2 calibration tests.
I have a non-bambu printer added but the menu is the same. Do I have to switch to it to see it?
Windows display scaling through display settings. Just change the % to w.e. when BS is open. Have to be in the prepare tab to use it l. Can change your scaling back after it shows.
