Admittedly I have a reasonable workshop...
And over time, I have cut lots of carbon arrows, but usually a small amount at any giving time, thus I don't have (nor want) and dedicated arrow saw.
I mark all the arrows with a sharpie. I hand cut them with a dremel (very useful tool for lots of things btw) short of the line. Then I take them to my belt sander to square them up and get to the mark.
All and all, don't over think it. I don't find the cutting of arrows to be precision work.