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Hot Topic (More than 10 Replies) Case stretcher (Read 1449 times)
KFW
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Case stretcher
Mar 18th, 2024 at 8:13am
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Well from what I have been hearing the KAL case stretcher is no longer available and the gentleman that made them has ceased production. So if it was not trademarked or patented is someone else planning on making them? If not could the concept be re- versed engineered and shop made? I have never seen a actual tool. But I may be interested in the fabrication of one.
kw
  
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Schuetzendave
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Re: Case stretcher
Reply #1 - Mar 18th, 2024 at 10:12am
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There are much cheaper case stretchers available - but take more time to stretch a case.
You need RCBS dies to use this stretcher.

Person who was making the KAL case stretcher can not do so anymore since his partner who had the patent passed away.
Not sure who has the patent now.


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« Last Edit: Mar 18th, 2024 at 10:23am by Schuetzendave »  
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craigster
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Re: Case stretcher
Reply #2 - Mar 18th, 2024 at 7:03pm
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Unless you're concerned about patent infringement ...
  
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uscra112
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Re: Case stretcher
Reply #3 - Mar 18th, 2024 at 7:31pm
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Who was it that showed us how to do this on a lathe?
  
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JerryH
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Re: Case stretcher
Reply #4 - Mar 18th, 2024 at 8:01pm
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uscra112 wrote on Mar 18th, 2024 at 7:31pm:
Who was it that showed us how to do this on a lathe?


GT (Greg)
  
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GT
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Re: Case stretcher
Reply #5 - Mar 18th, 2024 at 9:56pm
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KW knows how to do this several different ways on a lathe, he's trying to find the easy button...  He's even asked me to get involved, I came up with a lame excuse yesterday when we were shooting, maybe even changed the subject on him, sorry Dubya.   ;D
I mentioned that he may get a hit on the forum if he asked the right question.  
GT

**please don't misinterpret my comment about the "easy button", the stretcher is a far easier process than our lathe methods.   KW would prefer to purchase one if someone is interested in selling.   Where they are no longer being made, he suggested I chase down the patents and start making them... not interested **
« Last Edit: Mar 19th, 2024 at 12:57am by GT »  
"To invent, you need a good imagination and a pile of junk"  T. A. Edison
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Schuetzendave
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Re: Case stretcher
Reply #6 - Mar 19th, 2024 at 9:25am
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My .40 caliber stretcher is for sale for $40.
Brand new never used - ended up finding new longer cases for my .40-60 Maynard.
  
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Schuetzendave
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Re: Case stretcher
Reply #7 - Mar 19th, 2024 at 12:18pm
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Picture of the KAL-MAX case stretcher jig ($185 + $75 caliber conversion kit) without the 4-ton Porto-Power hydraulic tool set ( $575.45) that is also required to operate it.

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Does anyone know who now holds Chuck Maxwell's  patent on this stretcher jig?

Rick from Kal-Tool no longer has access to manufacture the jig since Chuck passed away a few years ago.

I have not had an update from Rick for a number of years now.
« Last Edit: Mar 19th, 2024 at 12:28pm by Schuetzendave »  
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texasmac
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Re: Case stretcher
Reply #8 - Mar 20th, 2024 at 5:06pm
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If you're fortunate to find a used Kal-Max the following Harbor Freight 4-ton hydraulic setup works just fine with it.
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I owned a Kal-Max several years ago.  Used it a good bit then sold it.

Wayne
  
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KFW
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Re: Case stretcher
Reply #9 - Mar 21st, 2024 at 5:59am
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All I can say is that Kal Max must never of sold very many. Definitely a niche item for our game.
kw
« Last Edit: Mar 24th, 2024 at 7:12am by KFW »  
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ten-mile
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Re: Case stretcher
Reply #10 - Mar 23rd, 2024 at 7:39am
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If someone knows the patent number. please post it.  Better yet, someone who owns one make a good dimensioned drawing so the clever ones amongst us can improve on it.
  
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hepburnman
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Re: Case stretcher
Reply #11 - Mar 29th, 2024 at 11:53am
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Someone asked about how to stretch cases on a lathe. Make up a nibbing bar like this.
  
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KFW
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Re: Case stretcher
Reply #12 - Mar 30th, 2024 at 5:53pm
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A nib bar in the lathe works well, I lube the inside of the case and use a carbide ball. Also set up carriage stops for uniformity. Its all by feel and easy to stretch more than you want.
kw
  
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Cat_Whisperer
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Re: Case stretcher
Reply #13 - Mar 31st, 2024 at 7:46pm
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KFW wrote on Mar 30th, 2024 at 5:53pm:
A nib bar in the lathe works well, I lube the inside of the case and use a carbide ball. Also set up carriage stops for uniformity. Its all by feel and easy to stretch more than you want.
kw


Oooooooo.  Carbide ball?  where from?  How attached?
  
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KFW
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Re: Case stretcher
Reply #14 - Apr 1st, 2024 at 3:20pm
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Got a dozen 1/4" and 5/16" carbide balls off Ebay. They work well for .40 and .45 cal cases. Drill the pocket depth for a net fit in the bar and slightly past ball center, then stake it place. One could braze it in place also.
kw
  
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