Get a spoon drill. Pass that through your head stock. I don’t have a lathe. I’ve drilled really long holes for flutes and fujara by hand using them. Needless to say they’re not high speed, but I’ve yet to come out the side and some holes have been 4 feet long. Other folks use them on a lathe. Look primitive but work well.
Spoon drills example
Lately I’ve been ripping stock in half, routing it down the middle with a core box bit and then gluing the 2 cores back together. With a good rip there’s very little offset in the grain if any is notceable at all.
It’s rip, route, glue. No sanding the ripped edge. Make it round after it’s back in one piece.
