Being frustrated with both the limited and extremely expensive offerings for a simple power outlet that could be mounted to my table (with ground), I set out to build a custom one.
For this model, I'm using a sy-cz-38 female power outlet made by Gripo. If you're in Denmark, you can find it here: https://www.xl-byg.dk/produkt/gripo-m-jord-forlaengerled-hvid-hun-m-jord-2094105
Before starting the build, you can optionally disassemble the part and use spray paint to get the color you want.
Dismantle the outlet and discard the shell but keep the remaining innards. Attach your wire to the outlet and guide the wire + outlet through the hole in the bottom of the model.
The original outlet has a screw that secures the shell. Align the printed shell and use the same screw to secure the printed shell.
Drill a hole into your table at least 54mm in diameter and max 60mm. Afterward, guide your new power outlet through.
From underneath the table, use the tightening ring to secure the outlet to your table. This may be a little tight initially, so you may want to tighten it on and off the shell a couple of times before you put it in your table.
Lastly, feel free to print the lit; it makes it a bit prettier when you're not actively using the table.
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The tightening ring has some holes (3.5mm) that can be used to secure it further if you're feeling paranoid. I ended up not using them :)
The author marked this model as their own original creation.