PEEK filament

One of the highest-performance thermoplastics printed at all. Naturally beige to grey-brown; color choice is essentially not a variable here.

• Enclosure recommended — Shrinks enough while cooling that draughts cause warping and split layers. An enclosure, or simply a still room, makes the difference.
• Keep dry — Absorbs moisture from the air, which prints as stringing, popping and weak layers. Filament that has sat out usually needs drying before use.

Engineering materials · 12 color variants from 8 brands · 3 with a retailer link.