that would be faster, but I can zero the caliper when it touches the arrow without a weight. Should probably lube it or something, it's not very smooth so I have to mess with it so it doesn't press on the arrow more than the weight does
looks awesome!!
looks to be about a #50 shaft??? 
offer a prize ( accolades and fame) as to who can guess the spine 
Yup, measured 54#
next step is to figure out how I'll heat straighten bamboo.. maybe I could make something like Danzn Bar's tool but with aluminum foil instead of a thick aluminum sheet haha. Or I could try to keep doing it by hand

I'm not very good at it