Modular Laptop Holder

This is a design based on the [triple laptop holder](https://www.prusaprinters.org/prints/118140-triple-laptop-holder).
From the original design, I added a rail where to slot and position the separators so you can set them wherever you like and keep any device of all thicknesses.
This design has a predisposition for a threaded insert on the bottom of the separator element. This design element provides a way to secure them in position with an m3 screw.
I've printed all the pieces separately without brim or supports, with an Anycubic i3 Mega S in PLA with a resolution of 0.3mm per layer and infill of 10%.
With these settings, the roughness of the print creates enough friction to keep everything in place without screws.