According to this answer, one can 'reheat and rebend' a violin bow. I have an old bow (poor-quality, it is weighted badly and needs rehairing) that is very slack and I'm guessing needs rebending.
I don't really want to take it to a luthier, since it's not really worth it, and I can only find tutorials for rebending warped bows (that twist to the side, which mine does not)
How can I rebend my bow?