Printable card
Maximum volumetric flow scorecard
Choose your file in the menu (or type the flows of a custom range), mark each band on screen or on paper, and the card suggests the Max volumetric speed for your filament profile. How to judge a band: maximum volumetric flow guide.
Write down too: filament brand, type, colour, temperature, hotend, nozzle, extruder, the tool (IDEX: one card per tool), your external perimeter acceleration, date. A value without them is useless next month.
Follows the max-flow test v1.3.0, hex column and wedge (all nine files are in the menu; the _T0 / _T1 files have the same bands). Judge the middle of the two long straights. The wall decides together with Heater sag and Clicks: any of them failing makes the band fail. Printed on A4: the rules on page 1, the grid on page 2.
How the limit is chosen
- Read from the bottom up, on the middle of the two long straights, both walls, in the upper two thirds of each band (its first layers are the transition).
- Mark the wall of each band: ✓ pass (even, complete, same gloss as below), ◐ degrading (matte or satin, the odd thin line, lines still complete), ✕ fail (gaps, missing or stringy lines, light through the wall), – not scored.
- Tick Heater sag if the hotend temperature sagged more than about 3 °C during that band, and Clicks if the extruder clicked or knocked. Either one counts as a fail, even if the wall still looks fine.
- The onset is the lowest band that fails. The limit is the band just below it.
- Set the filament's Max volumetric speed to 85 % of the limit (80 % if the limit band was already degrading; up to 90 % for a clean, sharp onset).
- Band 1 already fails: not a flow problem (temperature far too low, clog, wet filament, wrong filament diameter). Nothing fails: print the next file up for your nozzle.
- IDEX: one card per tool. Write the tool, nozzle and temperature on it.
✓Pass◐Degrading✕Fail–Not scored●Heater sag or clicks seen
| Band | mm³/s | Wall | Heater sag | Clicks | Notes |
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Click a wall cell to cycle: blank → ✓ pass → ◐ degrading → ✕ fail → – not scored. Click Heater sag or Clicks to mark them ●. On paper, write the sign in the box. Band 1 is the bottom of the tower.