Have you ever feard while working on an electric device you or someone else could accidentially plug it in and cause a dangerous short?
I don't know if you have, but I did. These simple plug caps can easily been put on the pins of plugs of Type A,B,C,E,F,G, preventing them from being plugged in.
Never confuse the plug of the device you are working with the plug of some tool you need again. Add safety to your life.
I printed the caps with a layer height of 0.3 mm to increrase the speed of the print. The quality gets better if you use only 0.2 mm, but the functionallity does not suffer in any way if you use the larger layer height.
One cap needs approximatly 1 m of 1.75 mm filament and 20 minutes to print.