Since you now have a lathe, you can order some delrin and make some of your own. It's good to get in the habit of making such jigs and fixtures yourself because that way when you need something a little different in size, thread or whatever you're able to do it. You might also want to make a variety of butt center plugs and some delrin arbors to fit different threads that fit different cues also so you can work on not only cues you make but those made by other cuemakers. I keep a supply of delrin around just for such small jigs and fixtures. You can make them in 5 - 10 minutes which beats waiting for someone to send some to you.