Hello. I've been wanting a vacuum chuck for my lathe for a while now but I didn't want to:

1) Spend $100 + for it
2) Make one on the lathe and rely on silicone so much.

Here you can print this out if you have a 1" spindle. If not shoot me a comment and I'll see if I can change it to whatever size you need. Also I didn't make a hole because different rods vary and you can drill your own size if you'd like, otherwise you can just throw it in the cad because the .sldprt is up here too. Enjoy.

P.s. Some people put plunger heads for better suction