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Member Joined: 06 Oct 2007 Posts: 2350 Location: West MI

[quote="Lemming"]Does anybody know where I can get a 16 gauge roll turnover tool?quote]

Precision Reloading also has them. Dave at BPI suggested running his tools in reverse or counter clockwise for opitimal roll crimps. I use both PR and BPI tools and found it works better on certain tools and clockwise works better on the others. Also, I have found that hitting the head of a cold tool (in the drill press) for 5-6 seconds with a propane torch before starting a crimping sesion, hot cup of coffee hot, produces great crimps from the get go in 24, 20, 16 & 10ga. Good Luck, Mike

Member Joined: 02 Feb 2006 Posts: 602 Location: western pa

Lemming, I like the idea of making it in 2 pieces. That should save messing around grinding a piece of tool steel to get the right recess. Thanks for the measurements. Just a thought: How about using a 1/2" bolt with the head cut off and dressed ( to approx. length) and threaded from the bottom up through the body of the tool. On the flat (top) side use a pair of jam nuts and that way you could vary the length of the center section. Fred

Joined: 12 Jul 2004 Posts: 118 Location: N.Y.

I think running the tool CCW works best in the southern hemisphere..

Joined: 01 Feb 2009 Posts: 64 Location: UK

I must try pre-heating the tool; sounds like a good idea.

Fred; I made mine out of ordinary mild steel rather than carbon steel. I also use mild steel for making the rotary cutters for chomping out filler wads from fiberboard; I didn't like the thought of the distortions I'd be likely to get from heat treatment or case hardening such thin-walled material.

Using a bolt sounds good. Bear in kind that you have to turn down the back end quite some to fit in the drill chuck; also, you'll want to turn down the central insert so that there's a radius at the point where it emerges through the collar, in order to form a U-shaped bottom for the slot. This is essential for getting the case lips to curl and fold under. I probably misled you when I said I used 1/2" rod. The resulting centre boss was 1/2" diameter, but the rod I started with was bigger, say 9/16", to allow for the radius. (I hope that makes sense. It's hard to describe without drawing a sketch!)

Can't see how the direction of turn would make any difference. Sounds a bit like the old left-handed screwdriver gag to me.

Member Joined: 02 Feb 2006 Posts: 602 Location: western pa

Thanks Lemming, I understand what you're saying about the internal radius.Using a 9/16 bolt might work better. I have mild steel,4140 and hard brass to work with for body material. Fred

I bought a vintage 16 roll crimper off e-bay and I'm loving it. A vintage crimper and paper shells just seem to go together.

Member Joined: 06 Oct 2007 Posts: 2350 Location: West MI

What are you saying? I love my set of left handed screwdrivers hanging proudly next to my left handed monkey wrench. Very Happy

On the BPI tools there is a roll pin set in the tool at an angle that does the work. It seems that tool direction forces the plastic in different directions with the given tool. The PR tools have 3 symetrically cut inlets within the groove that do the work, I like the PR tools better.

Joined: 01 Feb 2009 Posts: 64 Location: UK

[quote="putz463"] On the BPI tools there is a roll pin set in the tool at an angle that does the work. It seems that tool direction forces the plastic in different directions with the given tool. The PR tools have 3 symetrically cut inlets within the groove that do the work,

It's the geometry of those pins that's making me pull my hair out... I've studied them, but I can't seem to be able to duplicate them, for some reason.

The unit I made the other day doesn't have pins, and it more or less works

Member Joined: 06 Oct 2007 Posts: 2350 Location: West MI

[quote="Black&Tan"]I think running the tool CCW works best in the southern hemisphere..[/quote]

So B&T, just for clarification, to judge whether to run the tool in the correct direction we should look at which way the pigs' tail is curled first?

Joined: 12 Jul 2004 Posts: 118 Location: N.Y.