Over the years I have just not been able to bring myself to buy a case trimmer but have set my smallest lathe up in various ways to facilitate the process. That has always meant a slow process trying to hold casings without damaging them. Well earlier this week I had some home time and whipped up this little gadget to hold cases in the lathe's quick change boring bar tool post. In just about an hours time I trimmed 100 30/30 cases AND 100 30.06 cases, of course deburring not included. Setup only takes between 1 and 2 minutes (have to make sure the case holder is running true with the cutter), and I am using a 1/2" carbide endmill held in the chuck running at the little Logan lathes top speed. Uniformity from case to case is running .001 or less.
Why don't somebody invent one thats a bar with an adjustable cutter on it with the primer hole being the guide and chuck it in a varible speed drill ? The bar has an adjustable pin that fills the primer hole and the bar bottoms out in the bottom of the case when the case lenght is met ? You can adjust the cutter to go up or down the bar to set lenght. The guide pin can be replaced for different size primer holes.
This would quicker than your set up and a deburring whatchamacall it can be part of the cutting tool which would help as a guide to.
This is a picture that just popped into my head after reading the post above
LOL !!!
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Last edited by ArkansasHunter; 11-21-2009 at 12:21 PM.
Add the optional shaft for using a cordless drill, works even better.
Not as easy. Have to carefully set the length every time you change calibers. And don't need Popeye arms to hand crank it. I own the RCBS version. Only thing I use it for is 8X56R cases as Lee don't make no gage for that caliber.
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I use both Lee and my Lyman Universal trimmer with the power assist shaft. for the Lyman I make a dummy case for each rd. I trim on it,that gets me close and I can fine tune it from there if need be.
Teach
