Recreating Woodstock (67)

[Alejandro Paz(Germany)]

The metal domes, what I forgot to mention, I got them via aliexpress. There are a lot of different sizes, and kinds.

The ones I used are 9 mm in diameter. I'd say they are like the ones HP used, more or less.
9 mm metal dome, the ones I bought
I got bigger ones (because in aliexpress is sometimes difficult to size exactly what they are offering...) that have a pin, so you need a pad and two holes for the pins...
12 mm with pins

I also got 7 mm ones, they are a bit small, I think.
As you see the domes are held in place with tape, one side tape...

Something like this would probably also do:

8 mm cross metal dome