Hold down clamps 3D models

Hold-Down Clamp 4 CNC and others

Zip Tie Hold Down

woodscrew ziptie mount

Simple glass clamp

Prusa i3 Acrylic Model clamp

Adjustable Bed Clamps, now in OpenSCAD.

parametric joint clamp

Step Blocks - Hold Down Tools - Shapeoko 2 or X-Carve

3 Hooks - For holding stuff

Reversable Hold-Down for T-Slot Tables

Mountain Bike Light Bar support

Battery holder