4 model

Free

Bed Leveling Ring 250x1x2mm

Thingiverse

Free

mounted crossbar lock/holder 20x42mm

Printables

Free

ACPS First Layer Adhesion Test Model 220x180mm 0.1/0.15/0.2/0.3mm layer heights

Printables

Free

CTC Replicator Dual Bed Levelling 225x145mm

Thingiverse