[ Ref. Phil Neal in 230627 MMDigest

> Hello, I wish to replace a damaged comb on a small Symphonion.
> I can draw it very accurately on CAD and get it precision laser cut
> but I need to know the grade of steel to use, please?

Some people use Air Hardening Steel, but most use AISI Type O1 Oil
Hardening Steel. It's available from any machinist's supply house.

Good luck!

Nancy Fratti - Nancy Fratti Music Boxes
Canastota, New York, USA
http://www.nancyfrattimusicboxes.com/