Ken, just take the stopper to Home Depot or Lowes, they have all those threaded inserts hanging by the bolt section, figure out what size it is and get a bolt. Stick it through a block of wood go from there. Tony
I have one of those. Colin was saying that if the bottle stopper kit is one of those where the bit that attaches the blank and the stopper together is separate then just cast that into the blank. If that's the case then I'd have an outie of a blank and I'd have to make the innie for the lathe. I have the adapter that is an outie already. I have a Beall thread tap for the lathe and I'd be able to make the adapter that would screw on to the headstock and then screw the blank into the adapter.
But your suggestion on how to make the adapter would work well if I didn't have the taps and did the blank the traditional way.
This is a little more complex because I have a shape (the luffa) that I want to remain centered when I cast it. This one floated just a bit and so when I turn it the sponge will be exposed. This may be an OK look as well.
BTW: the luffa was soaked in colored Cactus Juice and then cured in the oven. I did put it under a vacuum but I don't know that I really needed to. It does give it a little rigidity and if/when it is exposed on turning then it should be OK and not soak up any liquids.






