Thank you Gatsby,

I knew the twelves were paper cased, but I wasn't sure about the 8's.
Do you know anyone who could make them? If they are turned, I could easily make them myself, but I am not sure about the right material (It's not just brass, or is it?).
I am also not sure about the dimensions (how tight should the fit be?), but Holland probably could tell me if I asked them.
Are these your tools on the photograph?

regards,

Huub.