What is LW-PLA / foaming filament and how do I print it?

Foaming PLA is still PLA, with a nozzle range that is the maker's, not a single foam switch. Cosplay is the costume page people often land on for light shells. Matte filament is the surface look. Neither page sets a foaming temperature.

What the sheets say

PolyLite LW-PLA, sheet checked 21 October 2026 and read 23 October 2026, lists 190–210 °C (374–410 °F), a bed of 25–60 °C (77–140 °F), drying at 55 °C (131 °F) for 6 h, and a print speed of 50–100 mm/s. The sheet calls it foaming technology and describes a matte surface that hides layers. It does not give a temperature where foaming starts. A density figure on that PDF did not extract cleanly, so it is not quoted.

Bambu PLA Aero, datasheet checked 23 October 2026, says low density and light weight come from foaming at high temperatures during printing, with small holes inside the prints. Nozzle 210–260 °C (410–500 °F), bed 35–45 °C (95–113 °F), print speed under 180 mm/s, blast-oven drying at 55 °C (131 °F) for 8 h. The sheet's filament density is 1.21 g/cm³. It does not publish a density for the foamed part. The sheet names unmanned aerial vehicles, aerodynamic models, and gliders as uses. That is the sheet's list, not a comment count.

colorFabb LW-HT PLA lists 190–230 °C (374–446 °F) and a bed of 50–70 °C (122–158 °F) from the Open Filament Database, dataset imported 13 October 2026. No drying temperature is stored, and the record does not describe foaming. eSUN PLA-LW is absent from the table because the nozzle and bed cells are empty.

What the community says

a Reddit thread in r/BambuLab: adds 5–10 °C (41–50 °F) to the spool's recommendation and names 50 mm/s, 2 walls, and 20% gyroid.

Questions