A reed of my C blues harp went broken and I don't have the opportunity to replace the harp or the reed board until I need it.
As a improvised solution, I thought of cutting a reed-shaped piece out of a brass foil (because I think reed are made of brass) and placing it in the harp somehow.
Are there any better solutions or advices for this?
Typically they are brass but other metals such as aluminum and steel have been used. That's great if you can reverse engineer it with a good pair of calipers. Inside the instrument they are attached to the reed plate with screws. Make sure to use a similar material to the surrounding reeds, tune the reed, and gap it to the slot properly. Here's a site with good pictures of the internals: https://fredrikhertzberg.com/category/maintenance/
