Billy; I see a lot of choises for you here. You vase could be used with either end as the top. After you deside in what form you want to use it, glue a scrap piece of 3/4 inch mdf or wood to the bottom you choose. Mount a faceplate or screw center to the scrap board making sure your vase is centered and running true. Use 3/4 inch screws to hold the faceplate and keep the screws from damageing your turning or tools. Drill out the inside of your vase with the largest forstner bit that you have or can borrow. Larger sizes can get very expensive !! I you choose to do the narrower part of the vase, glue the scrap board to the other end and do as "stonepecker" suggests and drill out for a glass or plastic tube. When you have your vase hollowed out, take it to the bandsaw and remove the scrap base. There are many other ways to mount your vase for hollowing, but this is one of the simplest, and requires no extra purchases. Next step up would be to purchase a good lathe chuck with a set of flat jaws and soft jaw pins. Some flat jaw extension systems can hold bowls up to 14 Inches around. I am sure others will have ideas for you also. Jim S