I see lots of folks asking how to cut their carbon arrows, so I thought I would share how I do it. You don't need an arrow cut off saw for this. I already had the Dremel tool, so I thought why not? I've been cutting them like this for years and it works great.
Start by clamping your Dremel to a work bench or table. This is a large metal cutting disk. Make sure it's clamped solidly.
Next mount a target point in a block of wood about the same height above the table/bench as your Dremel shaft. I like this type of point best because it fits all carbons I have tried it on. Mark one shaft the correct length. Pull out the knock and place over the target point. Clamp your block of wood at the proper distance from the Dremel. Make sure it's pointed at the dremel, so you get a square cut.
Just spin the shaft in your fingers as it's contacting the blade. I use light pressure here and make sure the shaft is rotating as it cuts. The nock end of the arrow will spin on the target point at the other end. Makes a great cut!