This little feller right here will take care of all your arrow cuttin. I've been using one for about 6 years now and it works great.

http://www.harborfreight.com/2-in-bench-top-cut-off-saw-61900.html


This thread on Archery Talk will give you an idea of how to build it. Mine isn't anywhere near as Hi tech as his.

http://www.archerytalk.com/vb/showthread.php?t=1206024