I need to thread some aluminum rod. The mini lathe is really not up to the task. I threaded some with it the other day just to prove I could, butanything I can do with a die will be a lot faster to just do by hand. I was thinking of taking a block of aluminum and drilling a hole the diameter of the rod for a snug slip fit. Then mill a groove/slot in the side of the block to the drilled hole. Slide in the rod, and put the whole thing in the bench vise. Any problem with that scenario? I keep plywood blocks cut to fit the vise, but they don't always get a good enough grip on rod stock.