Banana plug expansion box
thingiverse
Do you need to add an expansion box to your banana plug bench power supply? Sure, this design might just do the trick! The screw holes are designed for M4 screws. I've been using decent banana plugs like these for a long time: https://www.amazon.com/gp/product/B07BGT31YR. If you're looking for something over-the-top, check out these high-end banana plugs: https://www.amazon.com/DGZZI-Regular-Terminal-Amplifier-Connectors/dp/B07PXKNSSC. For a voltmeter/ammeter, consider this option: https://www.amazon.com/gp/product/B06XR2XKNT
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