I’m trying to figure out how to use a close-to-constant volumetric rate for a print, but I can’t seem to do it the way I could in prusaslicer.
In prusa you can just set the extrusion speeds to 0 mm/s and set a vol. speed limit in mm^3/s and it’ll meet that.
I can find the volumetric limit in Orca, but I can’t figure out how to let it run the show like it does in prusaslicer. All the previews have significantly higher flow rates than my setting. It does seem like the volumetric flow rate changes the speeds of the print, but not in a way that keeps pressure consistent thru a print.
When I try to do it the prusa way with 0s in place of speeds, I get an error that it’s out of range.
Is there a box somewhere to use vol. flow? what am i missing?
When you do the built in calibration flowrate test pass 1 or 2 all the settings are override settings from the slicer calibration settings it is not looking at the max volumetric speed setting for this test.
Also you would be putting your flow ratio setting using the box above next to the enable pressure advance check box if you did not know.
Because your filament flow rate is set so high. The flow rate limit assumes 1.0 and doesn’t actually account for the flow rate multiplier (I’m guessing you’re still at 1.7/1.8 there?)
If you set your flowrate at 0.5 you’ll see it halves in the model readouts
This one makes sense to me, but I think you read my other thread where I posted that exact flow rate lol
But I’m trying to understand what the deal is when the rubber meets the road. I can set my flow ration down to 1, for example, but then set the volumetric speed to whatever the highest flow was in the 1.7flow rate print, they’d come out the same, no? I’ve never tried that but it sounds fishy. Experiment time!
good lookin’ out, that saved me a lotta headaches.
One more wrinkle that I’ll explain for the sake of future googlers is that on flow rate test prints, the settings are put in place specific to each model.
This means that only some of the stuff from the “global” settings will apply to the parts in the print.
If you want to do a successful flow rate test print with volumetric flow settings, check each model on the board and change the infill speeds from 45 to 9999 like all your other speed settings.
but all of them have their infill and solid infill speeds set at 45mm/s
