Thank you all for your kind words. I have been thinking of trying my hands on a flat horn. I have a horn that does not have a curve, however I do not have a book press. Would a vise work, if I placed the horn in between two wood boards, (and an insert inside the horn, for support, of course)? I am not sure, if I would get an even pressure throughout the whole body of the horn. I have seen some homemade presses made out of plywood sheets. How do those work, or should I wait until I find a proper press?
BillK