@Vicki C things have been rolling around in my head since I read your post on the electric jerky maker.
I finally figured out how to make 2 threaded parts that fit together on the 3d printer. I made a big plastic nut and a piece to go through the top cover of my jerky maker with an embedded metal nut inside it.
View attachment 81091View attachment 81092I purchased a12"eye bolt marine quality. I thought maybe it could have been shorter, but after putting everything together it definitely needed to be 12"long.
DBMIMPORTERS Full Thread 1/2" x...
https://www.amazon.com/dp/B0D44VW7RX?ref=ppx_pop_mob_ap_share
In the photos above the pieces are in the order of how they go together.
It turns beautifully and I can spin the cap from one end to the other. The eye bolt is really heavy @ 1/2" diameter.
My husband and I stood in a hardware store talking about what to use for the rod, only to realize if it was a plain rod threaded from one end to the other the nut on the top would need to be welded in place or it would just unscrew. We looked at all the carriage bolts with hex heads but nothing was long enough and had threads the whole length.
I think a smaller diameter eye bolt would work also as long as it was going through a metal hex nut. The hex nut is embed in the tall piece with plastic threads on the outside and a canning jar rubber laying on it. When the big plastic nut is tightened down on the threads it helps stabilize the area around the metal nut.
View attachment 81093above is the cap put together with the new pieces I made and below are the old pieces minus the cap.
View attachment 81094View attachment 81095
I made an insert to make the amount of dough I had to push smaller so not as much pressure would be needed. The plunger part has a space to push a capped hex nut into it, so it can be tightened down, the other black disk laying at the end of the lower end of the eye bolt rests and spins on the capped hex nut.
View attachment 81097While the piece with the capped hex nut spins as you turn the eye bolt the end disk does not.
View attachment 81096
The 2 nuts on the rod near the eye can be adjusted and locked in place to prevent damaging your extuder disks.
The only thing I haven't figured out is how to make something that a drill can turn going through the eye of the bolt.
My extruder had stopped working. The last time I used it I was pushing with my belly while holding the trigger and that want very comfortable!
As is it weighs just over 2 &1/2 pounds.