For the cheap 6mm Switches

Quick instruction

Print the Plate you need, make your own length if needed.
Print the Bending Jig
Bend something fitting into shape. Works for 2.85mm filament or anything similar sized like 6mm² and 10AWG wire
Put together/possibly drill out holes to fit, glue, done

There's no limit to the amount of Switches you can put into a row. You will just have to put them together, all files needed are supplied. I used MIcrosoft's 3D builder

Due to the nature of FDM printing I decided to not print the guard rails, but to bend them out of PLA.
I have some 2.85mm filament from another printer than I bent using the Bending Jig supplied in the files.
The holes are a technically the right size but my calibration isn't 100% correct so i quickly drilled them out with a dremel tool.
Glued the pieces in place and gave them a quick coat of Paint.

The small switches fit perfectly, the hole in the Plate making sure they won't turn once inserted.

I am a bit of a space lover, and the Apollo capsules had those Switch Guards I really like.
I found a great model already, this one here https://www.thingiverse.com/thing:3514462.
But I tend to use smaller Switches than the ones in that example so I made my own one.