Tombow wrote: Just curious so I am asking:

What is the desire that you are looking for in adding weight to the shafts, just to have a bit more overall weight?

Do you have a spine tester and, if you do, would you check the spine on these Spar-infused shafts to see if it has affected spine? Again, I am just curious to know if the spar soak has a spine effect.

Thanks.

Yes, I wanted around 10 grains per pound for increased penetration (elk). I do have a spine tester and measured before and after. There was no change.

handirifle wrote: How well does the spar hold up to moisture? Is that the same stuff made for marine use?

Does it soften or get sticky in hot weather?

Lastly, what type of finish does it make, satin, glossy or in between?

I have used the spar urethane for years as a finish for my arrows and it is very tough and resistant to moisture. Also pretty slick if lots of coats are used. You can buy either gloss or satin. I have never had it get soft or sticky once dried…the stuff is hard as nails once set up.