Yes I did try to count Tops of folds. Valleys may be the better way.
I am hoping to learn from the experience. it would probably be a one of, I understand it may be expensive, trying to cost it out first to see how 'cheap' I could do it for. There doesn't seem to be much basic materials out there to chose from. The main questions that come to mind when looking at the bellows material, is what are the materials used, such as the correct card, acoustic qualities, temperature or water resistance, or do the Italian companies use ordinary drawing office card. Have seen some Videos of the metal corners just glued in place, I would have thought they would be better crimped in place as you suggest. That may be an expensive route if crimping is necessary.
The Accordion I was going to practice on is a Settimio Soprani, an old one, not sure of age possibly 1940 - 1950. I might set up a thread with the pictures of it as I have stripped it down. To have it repaired would be more than a decent modern Italian unit.
I was hoping to learn and not worry about whether it is a good finished product. Yet it will be difficult for me to allow that to happen. However the only thing I feel I will not be able to probably do is tune the reeds at the point it will need it.
I think the best thing will be to post pics and see what comments come in.
If it just shows me how they work in detail I will be happy I have learnt something. If I can end up with an instrument that works, even out of tune, I will be ecstatic, obviously not my main Instrument so will not be punishing others with it.
The cost is a consideration yes. Learning about the way they work is more important.
How can I post pics, was thinking of using photobucket. Or is there alternatives prefered on this forum.
I am intending to just going to enjoy the journey.
Paul C