This already could have been mentioned but I couldn't find it. This afternoon I had my 4 jaw mini chuck from woodcraft in the Jet and I put a 7/8" pen blank in it and put a drill chuck in the tail stock with the appropriate drill in. I was able to drill a perfect hole straight through without problem. I had to stop once and reset the tail stock because I didn't have enough movement in the drill chuck/tailstock. It was easy and accurate and takes me less time that setting up the drill press jig. I checked and it would have worked just as accurate with a 5/8" blank. Hope this helps somebody.