How fast your spool can go
A printer's top speed on the box is not what your part prints at. The slicer caps how much plastic per second each spool may push through the nozzle, and slows the head to stay under it. Pick your printer and spool and see the speed that cap allows.
Work it outWhat the caps say
The preset is the brake. On a P1S, Generic PLA is capped at 12 mm³/s and Bambu PLA Basic at 21. At a 0.2 mm layer and 0.42 mm line that is 143 against 250 mm/s.
The H2 runs PLA faster. The same Bambu PLA Basic gets 25 mm³/s on the H2D, H2S and H2C, against 21 on the X1 Carbon and P1S.
From 2.5 to 25 mm³/s. TPU 85A gets as little as 2.5. Bambu PLA Basic and Matte reach 25 on the H2 printers. Bambu's own carbon fibre nylons sit at 8.
Your printer, your spool
From BambuStudio 02.08.02.61: filament_max_volumetric_speed in every system filament preset for a 0.4 mm nozzle, matched to printers through its compatible_printers list and to its @base filament through the inherits chain. Speed = cap ÷ (layer height × line width), which is how a slicer turns a flow cap into head speed for a plain rectangular line. The printer's own speed and acceleration limits can hold it lower still; small layers and cooling minimums do too.
What you get
- Your real print speed
- From the flow cap, not the number on the box.
- A faster preset, if there is one
- Which spool and layer gets the part out sooner on your printer.
- The file checked
- Flow, temperatures and moves against the printer's limits before the first layer.
- Or we print it
- On fast printers in our farms in Shenzhen.
Ask about your speed
We answer within one working day.
Run 3D printers yourself? Put them on our print network.