Lyman Accutrimmer-resharpen cutter head?

[Poodleshooter]

Has anyone resharpened their Lyman's cutter head? Mine is causing the neck brass to flow outwards causing a burr all the way around the neck and making case extraction very difficult.
I've attempted resharpening but can't figure out what kind of edge will make this burring issue go away.
BTW, Lyman's answer is to buy a new cutter head. Gee thanks!
I've only had a few thousand rounds through this cutter head. If I can only get this much use out of it,I'll go back to lee trimmers.

 

[Chawbaccer]

Case trimmer, right? When I trim I have to re-chamfer inside and aout anyways, that should take care of the burr,

 

[Poodleshooter]

Yup,it's the trimmer
Yeah, I chamfer and debur anyway, but the burring is actually occuring on the inside and outside of the case neck simultaneously and is quite thick. I have to use a mallet on the handle of the trimmer to get the pilot and cutter head out of the case. The rough cut I could live with,but the sticking case is quite annoying.

 

[Numinous]

Sounds exactly like what my Lyman accutrimmer does currently. I live with it while I continue to save for a Giraud Trimmer.


http://www.giraudtool.com/prod02.htm

 

[Poodleshooter]

Numinous:
I was curious about it and checked Lyman's FAQ section. They state under one of their trimmer model's FAQ that if the case becomes difficult to remove from the pilot it's either not secured against the cutter properly, or the cutter itself is dull. I've not run that many cases against this cutter (a few thousand of different calibers),so I'm somewhat annoyed that it is already dull.
Replacement cutters are $11 at Midway, but the reviews on them are filled with pissed off guys for whom they didn't work well.

 

[The Bushmaster]

Wow...That is surprising for Lyman. You would figure that they would have better quality cutting heads. I have a RCBS trimmer and have used it for 20 years and the original cutting head is still sharp and cuts nice and smooth. Not saying that RCBS is the greatest 'cause it has it's draw backs too, but the cutting head isn't one of them...

Looking at my cutting head I notice that if I was to place the cutters face (cutting edge) down on a flat stone and use a figure 8 motion or against the side of a grinder I could conceivably sharpen my cutting head as my cutter is flat edged on the face. Just a thought...

 

[Kelly J]

Case Burrs

Let me get a bit technical here Brass is a very soft non ferious material and it is very jelous in that it does not want to let go of itself there fore it would not matter if you cut the case mouth with a razor it would still leave a burr that you will have to remove with a Inside and Outside champher Tool, Midway has a ver inexpensive one for under 5 bucks, it is a pain but no way out of it, and it would not matter if the cutter was HS Steel or Carbide it will still develop a burr.
If the cutter is old and well used then I would simply replace it, as unless you have access to a tool cutter grinder you will not get a satisfactory regrind on it. I say this as a retired toolmaker of 43 years.

 

[The Bushmaster]

Kelly J...They have told me the same thing about hand grinding twist drill bits on a grinding wheel too. But I didn't listen and hand grind mine all the time.

What you are saying about brass cases is very true, but a sharp cutter will not leave enough burrs to make removing the cutter mantril from the case a matter of hammer work as my RCBS cuts the case and I can remove it from the cutting head with a little back pressure. And yes Poodleshooter and I DO debur our cases after trimming. My expertice is 45 years (also retired) as a master marine and industrial diesel mechanic with engine lathe and welding experience.

Oh. By The Way Kelly J. Welcome to one of the best sites on the internet. And we CAN use your expertice on here. We have gun experts, doctors, lawyers. expert shootists, machinest, mechanics, truck drivers, ditch diggers, electronic engineers, computer techs, authors (writers) and we ALL think we are reloading experts . So please join us....

 

[asknight]

The Lyman trimmers are cheaper out of the box because they only include a tool steel cutting head, not a carbide head. A $35 carbide head as shown here will cure the early wear problems you guys are having.

A burr will still be developed that will have to be chamfered off, but not a case-binding mushroom that requires tools to remove from the trimmer.