When You Actually Need PEEK or PEI vs Just “High Temperature” Filament Marketing
The marketing problem behind “high temperature filament” Every spool of filament that survives a hundred degrees of ambient heat now gets called “high temperature” by someone trying to sell it. The phrase has expanded so far that PETG, ASA, polycarbonate, nylon, PA-CF, PEKK, PEI, and PEEK all share the same shelf label. The reality is…