A fully parametric clamp that connects to the adjustable mount https://www.thingiverse.com/thing:2448971.

I enjoy the clamp by https://www.thingiverse.com/thing:3816193, but I do not find it stiff enough. I also want the clamp to fit a thick desk, so I wrote an openSCAD script to have full control over the dimensions.

I adapted snippets of the script by https://www.thingiverse.com/thing:3075868 (especially for the "knurled" finish on the bolt). The openSCAD file relies on two "standard" libraries, namely https://github.com/Irev-Dev/Round-Anything and https://github.com/rcolyer/threads-scad.

I downloaded the connector screw from https://www.thingiverse.com/thing:4735101 but faced issues importing it in openSCAD, so I fixed the STL in MeshLab to produced a new file called "connector.stl". This file needs to be in the same folder as the openSCAD script for the latter to work. You do not need to print "connector.stl" (it is only there as a sub-component in openSCAD).

I added "flaps/wings" to strengthen the clamp and avoid bending. It seems to work well. The top part of the clamp makes an angle just smaller than 90 degrees with the side part to help bite.

For printing, I decided to lie the clamp body on its side so that the connector screw is printed horizontally for additional strength. The reason is that the connector screw is mostly under traction and might bear quite some torque/shear if the articulated arm is off-centred. Printing the clamp body thus requires a small amount of supports on the build plate. I opted for PETG for durability as I use the clamp daily but PLA should also work well. I recommend 4 perimeters and 40%-50% infill for extra strength and stiffness.

The bolt for the clamp is printed vertically, because it will mostly be in compression. The tooth angle is 45 degrees so it prints easily. This can be fine-tuned.

I included the nut and the 90 degree arm from https://www.thingiverse.com/thing:3816193 that connects to the rest of the mount for convenience. I like the latter piece because it allows you to rotate the mount while keeping the clamp fixed.

UPDATE 20-Feb-22:

• added a looser press with 0.4mm tolerance (instead of 0.2mm) for easier fit.