Air Mattress Plug

thingiverse

I recently created an air mattress plug. It's been over a year since we lost the original plug for our air mattress, and my wife suggested that I print a new one two weeks ago. So I did. It took me several attempts to get the thread right for the one-way valve, which has a 24mm outer diameter and a 30° pitch on the thread with 13 turns per inch. Once I had that figured out, I created a copy of the thread model and reduced its diameter for the inside thread, then reduced it even further for the plug. I added a rubber flapper and some O-rings to complete the design. Now that the plug is ready, we'll inflate the mattress and see if it holds air. This project was designed using Tinkercad, and you can edit the design online at https://www.tinkercad.com/things/4JBuUCyGZA1. The threaded rod used for this project came from http://www.thingiverse.com/thing:193647.