Screw-on cable guide for desks, cabinets, walls etc.

Previously I used a clip-on cable guide ( https://www.thingiverse.com/thing:4075707 ) since I did not dare to screw things into my cheap ass ikea cardboard desk. Now I replaced that one by a (self-built) solid wood one, i designed a new part to neatly guide my cables along the bottom side of my table. It consists of multiple channels, that allows removing/replacing cables without having to take all of them out of the guide (or even remove the guide completely). The number of channels, min/max cable diameter and screw size/length are freely configurable.