Hey, just installed the 0.4mm High Flow nozzle on my P2S. During slicing the print time went from 3h 47 to 3h 50 – it increased instead of decreasing.
My part:
I was expecting this nozzle to save time, especially with that much infill. Am I missing a setting? Should I change the max volumetric speed in the slicer?
I’ll attach a photo of the slice. Has anyone else seen this?
Thanks
Great topic!
You may be placing too much trust in the slicer’s time and material estimates. They are useful as a rough comparison, but I would not treat them as precise measurements. There have been too many examples, both here and in other forums, where the estimates are noticeably off. In my own experience, 0.8 mm nozzle estimates can be off by 15-20%, especially on material usage.
The real question is whether the print is actually being limited by volumetric flow. A high-flow nozzle should only show a meaningful improvement if the model, filament, temperatures, speed settings, acceleration limits, and cooling allow the printer to take advantage of the extra flow.
It would be useful to see controlled, real-world comparisons using the same printer, filament, model, layer height, speed settings, and slicer profile, with only the nozzle changed. A simple cube and cylinder would be a good starting point, followed by something common like a Benchy so others can repeat the test on their own machines.
ok, I Can do the test in the next day
I have collected some information in this post:
Maybe that has some valuable hints for you?
High flow nozzle helps on models with large flat surfaces.
If the geometry is complex i t can’t accelerate to full speed.
I don’t think it saves enough time to be worth it, unless you are a print farm. And depending on what you are making (like a really large flat, shallow, box), it migth be quicker to cut it out of a billet with a CNC or something.
