Good info and a process that's well explained so we can replicate this maximum volumetric flow calibration on our own printers for each of our own filaments. Keep in mind that for TPU, on many extruders, exceeding the rate at which the filament can be melted and extruded will not simply result is a little harmless slippage on the filament. The extruder gears will push the filament faster than it can melt and extrude and the excess filament will bend and pile up above the entrance to the cold side of the hot end, making a jam around the extruder gear and possibly damaging the extruder assembly. It's probably best to set a low maximum extrusion rate of 3 to 5 mm^3/s and live with the slower speed for reliable printing with TPU.
@@minimal3dp - I got a new SV08, put it into service a couple of weeks ago, and I'm procrastinating watching 3D printing videos on RUclips when I should be calibrating all the filaments I use and getting optimal OrcaSlicer settings for each. 🙂
Youur timing is perfect with this - I'm just going through the process of getting my UltiKlipper 2+ Super Saiyan Edition up to speed (literally) and today's challenge is updating Max Volumetric Flow.
Nice one! Note that setting the speeds in slicer over what the max volumetric flow rate allows won't do anything since the slicer will limit them to match the max flow rate depending on the layer width and height at any given point. This makes it very useful for playing with different width and height parameters as you don't really need to adjust the speeds as long as the max flow rate is realistic.
This is super helpful! I have a question though, when do my max flow test I get a number that seems great, last time I got 12, which according to another calculation means I should be able to print near 120. but if I enter speeds even above 80 I start to see under extrusion. Are my calculations wrong or am I entering the speeds wrong and my max flow is actually lower than I had initially thought
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Good info and a process that's well explained so we can replicate this maximum volumetric flow calibration on our own printers for each of our own filaments. Keep in mind that for TPU, on many extruders, exceeding the rate at which the filament can be melted and extruded will not simply result is a little harmless slippage on the filament. The extruder gears will push the filament faster than it can melt and extrude and the excess filament will bend and pile up above the entrance to the cold side of the hot end, making a jam around the extruder gear and possibly damaging the extruder assembly. It's probably best to set a low maximum extrusion rate of 3 to 5 mm^3/s and live with the slower speed for reliable printing with TPU.
Thanks for the great comment. I appreciate it.
@@minimal3dp - I got a new SV08, put it into service a couple of weeks ago, and I'm procrastinating watching 3D printing videos on RUclips when I should be calibrating all the filaments I use and getting optimal OrcaSlicer settings for each. 🙂
Youur timing is perfect with this - I'm just going through the process of getting my UltiKlipper 2+ Super Saiyan Edition up to speed (literally) and today's challenge is updating Max Volumetric Flow.
I try. Let me know if you have any questions.
Why not just run the Orca VFA test?
@@michaellindborg1510even better - Orca has max flow rate test builtin.
Nice one! Note that setting the speeds in slicer over what the max volumetric flow rate allows won't do anything since the slicer will limit them to match the max flow rate depending on the layer width and height at any given point. This makes it very useful for playing with different width and height parameters as you don't really need to adjust the speeds as long as the max flow rate is realistic.
It is interesting as you play with the heights and widths the interactions.
This is super helpful! I have a question though, when do my max flow test I get a number that seems great, last time I got 12, which according to another calculation means I should be able to print near 120. but if I enter speeds even above 80 I start to see under extrusion. Are my calculations wrong or am I entering the speeds wrong and my max flow is actually lower than I had initially thought
You could try the new speeds and redo your slicer flow calibrations. Another option is to do the test via the advanced calibrations in orca slicer