IDOD

[avidflyer]

Need to turn a bunch of 223 brass and some 308. I have a 21st century lathe setup, works good, just a little time consuming. For those that have the IDOD what have been your results? Would you but it again? Also have a SB13 full size lathe and a small hobby lathe that I could possibly use if I set up some type of tooling.

 

[Mulligan]

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Turning Necks On My 13” Turnmaster Lathe

Most know that I do all of my neck turning on a lathe. For years, I used out Monarch EE at my shop. Since I now do my work in my shop at my house, I decided to use my little 13” Turnmaster. It works just fine. I set up last night and turned 90 30BR cases that I had previously blown out in a...

forum.accurateshooter.com

Good info on the use of a lathe

CW

 

[Hoser]

If you dont have the full lathe set up from 21st you should get it. It is a huge time saver.

The IDOD looks cool, but it seems to make a hard job out of things.

 

[RegionRat]

but it seems to make a hard job out of things.

Very easy to run a bulk batch.
Once you have it set up...
Tap a case in, pop it out. Doesn't get any easier than this.

 

[quest450]

Am about to puke after turning two boxes of Lapua brass this weekend and I’m seriously considering IDOD

 

[Dusty Stevens]

What happens on an idod if you have a bit of runout like from expanding?

 

[Dos XX]

I struggled with the 21st century turning lathe. I had trouble adjusting the cutter. Once I would get the cutter set for the thickness I wanted, I would never change it. I would buy another one for different caliber or thickness. Maybe I was too dumb to know how to adjust it. I sold the lathe and the cutter heads.

I bought a Benchrite case "lathe" and use PMA turners. You can adjust a PMA turner in .0002 increments in no time. My variation in neck thickness is less. I try to not let myself get into a position where I need 200 cased turned in 2 days. I know that is sometimes easier said than done. It might take me a week or more to turn 100 cases, or I might get on a tear and do it in 3 or 4 days. 30 pieces of brass is about my max limit in one setting. I prefer to do about 20.

I also like that when I have the case chucked in the Benchrite lathe, I can polish the ID of the neck with some steel wool. I can also chamfer and deburr.

 

[RegionRat]

What happens on an idod if you have a bit of runout like from expanding?

The IDOD turns the inside and outside in the same operation, both to the center of the spindle.

With the case body tapped into the tooling, if you do a 100% clean-up cut, then the material that is left will be centered on the case body centerline within the noise.

If you feed it lopsided necks, you may struggle to get that clean-up.

 

[muleystalker]

Am about to puke after turning two boxes of Lapua brass this weekend and I’m seriously considering IDOD

View attachment 1410361

What did you use to turn them?

 

[JLT]

I made some three-finger brass collets that I use with the three-jaw chuck on a bench top lathe. 120 rpm and a carbide cutter in the K&M and things go smoothly and quickly.

 

[quest450]

What did you use to turn them?

I’ve been using 21st Century for a few years but it gets old quick, maybe like mentioned above doing it in smaller batches is the ticket
I have another 500 BRA cases to turn and 300 fireformed Dasher cases and I’m not looking forward to it with the 21st Century lathe

 

[PopCharlie]

I finished turning 300 pieces of 6br brass a month ago. It took me a few weeks of 3 to 4 hours a day, a couple days a week. Two passes on each case, from .013(or so) to .011, then .011 to .009. Thats all I could stand. Part of the issue was my equipment. I got in to it, and turned 30 pieces or so and knew I needed to upgrade. I was using PMA turners, model B first, then the model A tool. The turners are great, but I needed to upgrade the mandrels to carbide. I was also unhappy with the Sinclair turning driver and shell holders. Too much wobble. I ordered the PMA driver and shell holders. I replaced the standard mandrels with carbide mandrels. The cutters were already carbide. The upgrades helped tremendously. I used a Dewalt battery powered, electric drill to power the cases. I got down to just the wobble in the chuck. With a free hand, the wobble was not a problem. The results were extremely consistent. (.0002). I am considering getting some sort of bench driver like the Benchrite for the future.

PopCharlie

 

[muleystalker]

I finished turning 300 pieces of 6br brass a month ago. It took me a few weeks of 3 to 4 hours a day, a couple days a week. Two passes on each case, from .013(or so) to .011, then .011 to .009. Thats all I could stand. Part of the issue was my equipment. I got in to it, and turned 30 pieces or so and knew I needed to upgrade. I was using PMA turners, model B first, then the model A tool. The turners are great, but I needed to upgrade the mandrels to carbide. I was also unhappy with the Sinclair turning driver and shell holders. Too much wobble. I ordered the PMA driver and shell holders. I replaced the standard mandrels with carbide mandrels. The cutters were already carbide. The upgrades helped tremendously. I used a Dewalt battery powered, electric drill to power the cases. I got down to just the wobble in the chuck. With a free hand, the wobble was not a problem. The results were extremely consistent. (.0002). I am considering getting some sort of bench driver like the Benchrite for the future.

PopCharlie

With the new carbide mandrels do you still use some lube in the case necks or is this eliminated with the carbide mandrel?

 

[PopCharlie]

With the new carbide mandrels do you still use some lube in the case necks or is this eliminated with the carbide mandrel?

I still use lube. Good old fashioned 3 in 1 oil. After turning is completed, I rinse the cases in lacquer thinner to remove the oil.

PopCharlie

 

[Rset]

With the new carbide mandrels do you still use some lube in the case necks or is this eliminated with the carbide mandrel?

You are going to get different opinions on this one for sure. In my case, the answer will depend on how much you are turning off your cases.
If just doing a partial cleanup to even things out, no lube will be needed in my opinion, and in my experience.
If doing a heavy turn for a tight chamber, I don't travel this road, so those that do will have better input.

 

[dcali]

I still need lube carbide mandrel a but much less. This depends on how tight the fit is and how fast you turn them. Carbide is a requirement for me. I wouldn’t even consider steel anymore. It’s that much better.