Auto decap machine

J

jmorris

New member
I didn’t get to do anything neat this winter and another thread on another forum had me thinking about an auto decap machine that could cull SPP 45 ACP from LPP 45.

I have the decap and feed part working. Maybe next week I’ll have some time to add the cull part right before the exit.

https://www.youtube.com/watch?v=YzPBLrtajCc
 
My immediate thought:

Use a tapered cone that enters the primer pocket.
Full depth achieved = accept.
Stop short = reject. (Or, it could even push the case up to another "level" of the guide rail, which leads to the 'reject' zone...)
 
Winter is a long way from being over.
The best machine that could cull SPP 45 ACP from LPP 45 is the Mk I Eyeball. Works way faster than any machine(a computer included) can measure the difference between an LP and SP primer. There 's a 1.5 thou tolerance between minimum and maximum diameter. And 2 thou for the depth.
https://ballistictools.com/articles/primer-pocket-depth-and-diameter.php
Any cone(all cones are tapered. snicker.) would require having a wee, tiny, very expensive, sensor on it or attached to it.
"...a solenoid that diverts..." Solenoids are just switches.
 
The best machine that could cull SPP 45 ACP from LPP 45 is the Mk I Eyeball. Works way faster than any machine(a computer included) can measure the difference between an LP and SP primer.
Click to expand...

Not sure how you arrive at that conclusion. The device I posted the video of in #3 does it while I load. In other words takes no extra time and never even have to pick up a case, much less flip it over to see if it has a small or large primer in it.
 
Any cone [juvenile remark] would require having a wee, tiny, very expensive, sensor on it or attached to it.
Click to expand...
Um... yea...
That's pretty much the point. ...And what jmorris does.

And they're not that expensive. Such a device could operated based on as few as two micro switches. I happen to have a bag full of suitable switches sitting on the floor of my '70 Nova, because I haven't gotten around to fabricating a throttle linkage bracket to use one of the switches for transmission kick-down. Said switches cost me a WHOPPING $0.17 apiece. Or... $1.70 for 10 pieces. ...And I overpaid, because I wasn't buying in bulk.
 
I missed the “solenoids are just switches” part. Solenoids are coils of wire that act as magnets when carrying electrical current, switches are what we use to make or break the electrical current.
 
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