Current status of the project:
The problem is that the stamps/paint combination doesn't work well. The paint is too thick or stamps material is not right. Too much paint or too few makes the painting unreadable.
Stamps materials tested:
Paints tested:
Had no luck with these…
The design, if someone wants to remix and enhance, could be found on this onshape document
Some info from the original projects:
Similar project instructions could be found here
This is the general concept:
The author remixed this model.