Rails are all ZYLTech V Slot as it was cheaped than the normal stuff. Note for anyone else though. The center hole in the V Slot is smaller than the normal extrusion. You need M5 bolts if you are using blind corners to assemble.
I used my Portaband and table to cut and then rigged up a perfect(ish) right angle guide to square off the ends on my belt grinder.
