Hard to tell what is going on in your drawing there, but it looks like you have two complete arcs for each radius running tip to tail. What you really need is to have a front arc segment at the larger radius which is tangent to a separate arc in the middle which is smaller radius, and then that is t...

I've been using a modified version of the spreadsheet I found on the forums a while ago. It does not factor in base material, edges, or top sheet so it could just be an underestimate for actual stiffness. Do you factor those in your calcs? https://docs.google.com/spreadsheets/d/1M917WmaA7A4fj-SYlFd0...

I'm very interested in that textbook figure (which book is that?). I chose 2.2 - 11.5 - 2.2 core thickness somewhat arbitrarily for my first pair that I'm working on. My spreadsheet indicates that should result in around 30 N/cm. I'd have to go up to like 14mm under foot to get to 45 N/cm (center of...

Hello All, I thought I would share how I used my 3d printer to get a precise tip/tail shape on my master template. I'm working on the template for my first pair. Its a half template that will be flipped to get symmetrical whole templates for the base shape. I first printed the shape split onto sheet...