What makes the cases spin? (Case annealing machine)

[Daneren]

I were looking at a Schrokit case annealing machine, and i started wondering.

What makes the cases spin in their sockets?

https://www.youtube.com/watch?v=csgCJsWgrxQ


Do anyone here have one of those, and are able to shoot a picture?

 

[BLDTYLRY]

The friction from the lower plate spins the case heads

 

[Daneren]

Is the friction caused by a rubbersurface or something like that?

 

[BLDTYLRY]

Mine has Teflon tape on the bottom plate

 

[Daneren]

I'm experimenting with my own here, and just tried with tape. It seems to work, but not super consistently.

Could i get you to shoot a picture into one of the holes, so i can see how the tape is placed?

 

[OF&B]

The lower plate on mine is dished so only the outer edge of the case head makes contact, causing the rotation. The size of the holes in the top plate and it's height off the bottom plate also affect how positive the rotation is.

 

[former naval person]

As OF&B says. Alternately, the holes in the top plate could be drilled at a very slight angle off center, which would accomplish the same thing. One edge will contact, rotating the cases. Not being a machinist, I don't know which process would be the most expeditious.

 

[Daneren]

I have relieved half of the diameter under the cases, but it's apparently not enough. I will try to relieve more, so only the very edge of the case has contact. If that doesn't work, i will put in a large o-ring.

 

[Daneren]

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