PETG Filament Settings: Why the Advertised Temperatures Are Wrong
TL;DR PETG is the go-to filament for functional homelab parts — heat resistant, mechanically strong, and chemically stable. The advertised temperature ranges on most PETG spools (230-250C nozzle) are too low. After systematic testing, the settings that actually produce strong, well-bonded prints on the Bambu Lab P1S are 265C nozzle and 80C bed, with first layer at 270C/85C. These temperatures are 15-35C hotter than what the manufacturer label suggests. Amazon came through with a 4KG bulk delivery that arrived the same day the previous spool ran out, which was cutting it closer than I would like. ...