I wanted to make a machine shield and for some reason wanted to do it DIY.
I bought a polycarbonate piece from a face shield, and a 24" gooseneck rated for 4 lbs (this is Harbor Freight style rating on a Chinese import, but it can hold one pound easily).
I milled a T nut style thing (actually shaped like a fat letter I), that goes into a slot on the forward face of the table. That's the slot that is milled on a vertical surface and has a 3/8" width, this is not slot on the horizontal part of the table.
This adaptor is held in place by two 1/4"-20 screws that tighten it by screwing them in.
The gooseneck has a 1/4-20 threaded male end (looks like it was made for photography), and is also screwed into the I-nut.
I am going to make a crescent shaped bar that the face shield would attach to (so that it is not flat, but kind of round), and attach that to the gooseneck. Then I could position my shield based on the need of the moment.i