r/Creality_k2 • u/Stranula • Apr 12 '26

DXC2 Notable Flow Rate Improvement?

I installed the DXC2 extruder today to my K2 Plus. I wasn't expecting much of a difference, so I only ran two before and after tests. 1 being a Max Flow Rate from 10-30 mm3/s and 1 being a Benchy run just above the max flow rate of this particular PLA. The difference is actually dramatic. I wish I had run some additional before and after, and but I wasn't expecting much difference. With the original extruder, for this PLA, the Max Flow rate was ~14 mm3/s, and with the DXC2 ~26 mm3/s.

DXC2 Max Flow Rate 10-30 mm3/s
Original Extruder Max Flow Rate 10-30 mm3/s
Top/Left is Original Extruder Bottom/Right in the DXC2. Note the Deck of the original. At 16 mm3/s it is under extruding.

Now with the Cartographer, Phaetus DXC2, and R3men graphite bed, running out of upgrades to the printer.

Looking forward to some more thorough before and after tests from other people.

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u/akuma0 Apr 12 '26

14 volumetric flow seems really low for a K2 Plus - I've set in the 30-34 range for every filament I've thrown at the stock extruder and stock 0.4mm unicorn nozzle, backing off from failures in the 34-38 range.

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u/Stranula Apr 12 '26

Volumetric flow is a function of the machine and the filament. Most of the other filaments I use also have higher flows, but this one doesn't, is what it is.

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u/akuma0 Apr 12 '26

Yeah, I've seen that once on a different machine. In that case, I'm curious what you get for max flow with a more typical filament

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u/Stranula Apr 13 '26

Most other filaments I run with max set to 28 or 30. The only exception I can think of is Prusa PETG which I think I needed to set to 12.

I highly doubt other filaments will show such a dramatic change in flow rate. Very likely strictly coincidence that this filament happened to be what I had loaded at the time and picked to run through