The Hub

First time here on the forums, not sure how often I'll check in, but thought this the best place to post it. Was playing with an idea proposed by Buck Van Laarhoven on a parametric model for bolt-on neck shims, and found the formulas I wrote up translated easily to Taylor and conventional acoustic neck joints so decided to add boxes for those as well. I'm not well versed in Google Sheets, but couldn't see a way to upload the file direct…