[spydum]

I feel like they should be attached and not stacked?

https://imgur.com/gallery/W13nR

Fwiw: 10.3cm

[spydum]

https://i.imgur.com/zUl5AP8.jpg

Measured 10.7cm: https://i.imgur.com/I637r2v.jpg

What have you done to me!? Can't stop.

[BatFastard]

I never considered that the backplane is the same height as the inter dot distance. I thing I can think of as a possible improvement would be to put the single dot side ways, and put a grain of salt on each side. Or find a very slight indentation to put it in.

[prawn]

I really like the thinking of moving the smallest piece to the very bottom!

This would make a great quiz night team challenge or corporate team-building activity.

[jacquesm]

One of the conditions was that it should be able to stand on its own ('freestanding'), that one can't balance on the lower piece.