PLA or PETG
PLA is the cool one. Its makers give 190 to 230 °C on the nozzle and 25 to 60 °C on the bed, none of them asks for an enclosure, and it dries at 45 to 55 °C. PETG runs hotter, at 230 to 260 °C on the nozzle and 70 to 90 °C on the bed. Polymaker adds that PETG above 240 °C needs an all-metal hotend.
PETG is also a little denser, 1.25 to 1.27 g/cm³ against 1.17 to 1.24 for PLA, so a kilogram of it makes a few meters less filament. The filament calculator works out the difference for your spool.
The plastics that want an enclosure
ABS, ASA, PC and nylon print hotter, and their makers ask for an enclosure. ABS, ASA and PC also want beds of 75 to 115 °C. Prusa says an ABS printer should sit inside one that keeps the air around it warmer. Polymaker’s sheet for PolyLite PC asks for a chamber at 70 to 100 °C.
Bambu Lab gives a chamber temperature for its nylon PAHT-CF instead: 45 to 60 °C. Nylon also dries the hottest of the seven, at 80 to 100 °C for 6 to 12 hours.
Flexible TPU
TPU prints at 210 to 240 °C on a bed of 25 to 60 °C, and Bambu Lab’s sheet for its TPU 95A sets a speed limit as well: under 80 mm/s. It dries at 60 to 70 °C, and its makers say nothing that asks for an enclosure.
Before you print
A span is a starting point and not a setting. For your own spool, use its maker’s row in the print temperature chart and the drying chart.