Clamp utilizes a print-in-place hinge. There are two models, one with a loop perpendicular to the cable path and one without the loop. Both models require support touching the build plate under the toothed section. You may also want to support the bridge for the clasp or use bridge settings. There is some programmed tolerance for sagging. DO NOT support the hinge section as the hinge will fuse.
The author hasn't provided the model origin yet.