Doll Trepanation...

[phillip57]

I was frustrated with my Silicone spinner, with the head not fully seating on the neck due to the trapped air pocket in the neck cavity.It didn't take long to figure what to do.
I sharpened a brass tube at one end and put a small pool of water based lube in the neck cavity, her head inverted in my hand. I then placed the tube at the back of the neck cavity, and began to twist the tube, and push, periodically retracting the tube to allow lube to seep into the cut. It didn't take long to work it through the top of her head. Now no air pocket, the head fully seats.

Phil

[HappyWabbit]

Or you could have just stuck your finger in the head along the neck as you pushed the head on this will also let the air out of the head that’s what I did with my bathing beauty