Looking to setup a little repository for Club builders here.. Some calculator pages and other stuff
Grip size and Weights.
https://www.golfpride.com/faqs/grip-specifications/
Shaft Information and comparison
https://s3fitting.com/
Swing Weight Calc
http://www.leaderboard.com/swingwt.htm
https://www.valuegolf.com/golf-club-...ght-calculator
MOI Calculator
http://golf.okrasa.eu/language/en/clubs/moi-en/
Please add more as you know of them...