Flow Rate
5.28 mm³/s
Max Speed
170.5 mm/s
Feed
2.2 mm/s
Stock V6: ~11, CHT: ~30, Volcano: ~25
Volumetric Flow Rate
5.28
mm³/s (35% of max)
Max Speed
170.5 mm/s
Feed Rate
2.2 mm/s
Status
OK
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Inputs
Result
0.2 * 0.44 * 60 = 5.28 mm³/s. Max = 11 / (0.2 * 0.44) = 125 mm/s.
Inputs
Result
0.3 * 0.66 * 100 = 19.8 mm00B3/s. Max = 25 / (0.3 * 0.66) = 126 mm/s.
Flow rate (mm3/s) = layer height * line width * print speed. At 0.2mm layer, 0.44mm width, 60mm/s: 0.2 * 0.44 * 60 = 5.28 mm3/s.
| Hotend | Max Flow | 0.4mm Nozzle Max Speed | 0.6mm Max Speed |
|---|---|---|---|
| Stock V6 | 11 mm³/s | 125 mm/s | 55 mm/s |
| Dragon HF | 20 mm³/s | 227 mm/s | 101 mm/s |
| Volcano | 25 mm³/s | 284 mm/s | 126 mm/s |
| CHT Nozzle | 30 mm³/s | 341 mm/s | 152 mm/s |
The hotend cannot melt filament fast enough. You get under-extrusion, weak layers, grinding on the extruder gear, and potential heat creep or clogs.
Print a flow test tower with increasing speed. The point where layers become rough or under-extruded is your max flow. Typical stock hotend: 11 mm3/s. High-flow: 20-30 mm3/s.
Larger nozzles allow higher print speeds at the same flow rate because each layer cross-section is bigger. A 0.6mm nozzle can print 2.25x faster than 0.4mm at the same flow rate.
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