Power Neck Turner Idea

[amlevin]

Now, to find a neck turner with a long mandrel where you can grip it securely in a drill or drill press...that extra 1" of material that sticks out of the back of the neck turner is more precious than diamonds!

I've never found the Sinclair shell holder for neck turning to be inadequate. Chuck it in my drill and then just hold the turning tool in my hand. By holding the tool it can follow the case should it not be exactly straight in the shellholder.

Seems to work and just about every "system" uses something similar.

 

[liliana]

nice info
​

 

[243Lapua]

Thinking of getting one of this units to convert it into a power neck turner. I think it is possible. Its got the correct RPM's as the units that usually sell at a higher price. Shaft can be threaded to accept chuck. For anyone who wants to build one and not spend a lot of money and is a hobbiest. Any Idea's

http://www.ebay.com/itm/351174706498?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Well I finally got my power neck turner in operation. This unit is powered by a small Bodine continuous use motor, which is really quiet, selectable RPM pulleys, craftsman drill chuck. Used to be a scientific liquid stirrer. So far unit functions as it should. Attached it to the RCBS aluminum plate that I can attach to my bench or my portable bench. No more hand drill. Total expense $60.00.

Look in Ebay for this sort of motor/stirrers. There is another brand by the name of Talboys Stirrers that can be converted to Neck Turners really easily.

 

[Joe R]

Erik Cortina said:

Hi Erik,
I need to do a better video and show more detail.

I do expand the necks with a Lyman M die. I did have to polish the mandrel of the M die down to the proper size so that it compliments the neck shaver mandrel. The neck shaving is very consistent. The case neck does slide on the mandrel and is stopped by the shoulder of the case. I have a tube micrometer that measures to .001 and the cases seem very consistent, but I really could use a micrometer that goes to .0001 and then I would have a better answer for you.

I'm sure someone with your skills could improve the neck shaver. A different case holder is required for different calibers. Gracey makes a case holder that must fit all .308 cases and there is a little play there that you could improve by making a custom one just like you did for the Giraud case trimmer. I'm sure you would find other ways to improve it, but I don't have your skills and smarts much less the tools.

For now the neck shaver is working well enough to give me decent groups (see below). But just an hour ago I had a breakthrough in my reloading process that is giving me .0005 to .001 runout, so if I keep whittling things down there maybe hope for me yet.

Kindest regards,

Joe

I would be very interested in your results after you get a .0001" tube micrometer.

Hi Erik,
I finally got around to watching a video on how to properly read a micrometer. It turns out I have one that goes to .0001, I just didn't know how to use it properly. Thanks to your question I've learned something new.

Back to accuracy of the Gracey neck shaver, I've found case necks that vary in thickness from .0140 to .0145 and from .0142 to .0147. Since the max spread seems to be .0005 I'm going to guess that some cases where turned in different batches after I had moved the cutter and didn't set it exactly in the same place. Of course I didn't know how to read the .0001 scale of the micrometer back then, I do now. So, as it is now, there is room for improvement. I'm pretty sure that is due to the shell holder being SAAMI compliant and not specifically sized for my cases, giving my case some "woble room".

I'm going to look into having a shell holder made with my reamer, after that I'll see if I can get a more precise cut all the way around. It'll be interesting to see if it shows an improvement on paper. Either way it can only help and will not hurt anything.

Thanks again for asking the right question.

Kindest regards,

Joe

 

[Erik Cortina]

Erik Cortina said:

Hi Erik,
I need to do a better video and show more detail.

I do expand the necks with a Lyman M die. I did have to polish the mandrel of the M die down to the proper size so that it compliments the neck shaver mandrel. The neck shaving is very consistent. The case neck does slide on the mandrel and is stopped by the shoulder of the case. I have a tube micrometer that measures to .001 and the cases seem very consistent, but I really could use a micrometer that goes to .0001 and then I would have a better answer for you.

I'm sure someone with your skills could improve the neck shaver. A different case holder is required for different calibers. Gracey makes a case holder that must fit all .308 cases and there is a little play there that you could improve by making a custom one just like you did for the Giraud case trimmer. I'm sure you would find other ways to improve it, but I don't have your skills and smarts much less the tools.

For now the neck shaver is working well enough to give me decent groups (see below). But just an hour ago I had a breakthrough in my reloading process that is giving me .0005 to .001 runout, so if I keep whittling things down there maybe hope for me yet.

Kindest regards,

Joe

I would be very interested in your results after you get a .0001" tube micrometer.

Hi Erik,
I finally got around to watching a video on how to properly read a micrometer. It turns out I have one that goes to .0001, I just didn't know how to use it properly. Thanks to your question I've learned something new.

Back to accuracy of the Gracey neck shaver, I've found case necks that vary in thickness from .0140 to .0145 and from .0142 to .0147. Since the max spread seems to be .0005 I'm going to guess that some cases where turned in different batches after I had moved the cutter and didn't set it exactly in the same place. Of course I didn't know how to read the .0001 scale of the micrometer back then, I do now. So, as it is now, there is room for improvement. I'm pretty sure that is due to the shell holder being SAAMI compliant and not specifically sized for my cases, giving my case some "woble room".

I'm going to look into having a shell holder made with my reamer, after that I'll see if I can get a more precise cut all the way around. It'll be interesting to see if it shows an improvement on paper. Either way it can only help and will not hurt anything.

Thanks again for asking the right question.

Kindest regards,

Joe

I see, I guess you didn't know that lining up the lines on the numbers around the barrel of your micrometer would tell you how many .0001" past the number you had huh?

I'm sure making a custom shell holder will help with accuracy. Email me a picture of your shell holder, maybe I can make a video on making a shell holder for it (yours).

 

[Joe R]

Erik,
We need to take it offline. I'll call you.

Joe