Fasteners
Brass knurled insert you melt into 3D printed parts for real metal threads. Includes the bore, depth and boss to print.
Solid Vibes StandardFasteners
Metric hex nut (ISO 4032) or thin hex nut (ISO 4035), with the hex pocket size to print for it.
Solid Vibes StandardGears and motion
LM8UU-style linear bearing for smooth rods: LM3UU to LM20UU with bore, outer diameter and length.
Solid Vibes Standard