Thanks! I did it by hand with a kit similar to this:
Discussion
Ohh cool, I thought the material on yours looked harder but that looks like rubber, which I guess makes sense for a stamp. Very cool!
I tried carving a wooden spoon once with a kinda similar knife. It was a lot more work than I expected, haha
oh goodness, wood sounds way more challenging to carve! Yes, this is a flexible rubber, even more bouncy than an eraser 😄