Not to get you thinking to hard David, but glues weighs alot! I took my arrows into to work last night and weighed them up on a scale we have there. It's a gram scale that can read in thousands of a gram, I just have to do the math to convert it to grains. Real sensitive, to a guy standing over it breathing throws it off! LOL!! But any way, I strip two shafts, pretty good and weigh them with field tips. There was a three grain difference. Take the tips off and the tips alone have a 1.5 grain difference. Then the shafts have a 1.5 grain difference. I think well I will clean and scrape real good and make sure there is no glue at all. After I spent twenty minuets cleaning two shafts of all glue there was only .25 of a grain difference on the Danny Miller arrows. I thought it was strange that just a little glue could make up 1.5 grains in weight! Then the guy in the lab looks at me and said " do you think you are getting a little to deep into this, its just a arrow!" I just laughed and thought I am only at the beginning! LOL!!