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Ken Jay




Location: Portland Oregon
Joined: 23 Aug 2003

Posts: 141

PostPosted: Tue 16 Mar, 2010 1:02 pm    Post subject: Tap & Die on Tang         Reply with quote

I'm thinking of putting a different pommel onto an ATrim sword. The existing pommel is a large wheel and I'm looking to add a shorter scent stopper. The problem is I need to cut off a portion of the threaded tang. I'm pretty sure this will mean work on the altered threaded portion to ensure the locking nut is able to screw on. Any advice on how to do this? Take it to a machine shop maybe or try it myself?
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Toke Krebs Niclasen




Location: Copenhagen
Joined: 31 Jan 2010

Posts: 55

PostPosted: Tue 16 Mar, 2010 3:08 pm    Post subject:         Reply with quote

I my experience, cutting a regular bolt to size with a saw damages the tread, which one then have to straighten out to fit a nut on.

It can be done by grinding the tip slightly rounded after cutting, but one nice trick is to leave the nut on and use it to straighten out the tread by unscrewing it.

So put on the nut, cut above it, grind the tip of the tread, and screw off the nut.

You can do it with a rough sharpening stone, the lack of space above the nut will ensure that the rounding of the bolt/tang is only slight. Wink
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Maurizio D'Angelo




Location: Italy
Joined: 09 Feb 2009
Likes: 3 pages
Reading list: 3 books

Posts: 649

PostPosted: Tue 16 Mar, 2010 4:47 pm    Post subject:         Reply with quote

Toke Krebs Niclasen wrote:

It can be done by grinding the tip slightly rounded after cutting, but one nice trick is to leave the nut on and use it to straighten out the tread by unscrewing it.


I think that this is a good idea.

Ciao
Maurizio
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Thom R.




Location: Tucson
Joined: 26 Jul 2007
Reading list: 30 books

Posts: 630

PostPosted: Tue 16 Mar, 2010 4:53 pm    Post subject:         Reply with quote

Personally, I would re-do the grip before messing with the steel. but if you are shortening by just 2, or 3 mm or so then the nut trick and grind the end rather than cutting it. if much more than that I would make a new longer grip. tr
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Michael B.
Industry Professional



Location: Chugiak, AK
Joined: 18 Oct 2007

Posts: 356

PostPosted: Tue 16 Mar, 2010 7:01 pm    Post subject:         Reply with quote

I've used a tap and die set on a tang before. Worked really well. I didn't shorten the handle just had to make a repair to a stripped tang.
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Michael Bergstrom
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Hadrian Coffin
Industry Professional



Location: Oxford, England
Joined: 03 Apr 2008

Posts: 381

PostPosted: Tue 16 Mar, 2010 9:03 pm    Post subject:         Reply with quote

Hello,
Why not simply take off what you don't want, and then put on what you do. After it is all on tighten down the nut...and cut of the excess. Then give it a light peen.
Cheers

Historia magistra vitae est
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Jonathan Blair




Location: Hanover, PA
Joined: 15 Aug 2005
Likes: 4 pages
Reading list: 2 books

Posts: 479

PostPosted: Wed 17 Mar, 2010 4:43 am    Post subject:         Reply with quote

Sometimes the "screw on the nut then cut off the excess and unscrew the nut" method doesn't work. If the nut is softer than the tang material, you'll screw up the nut before the tang gets cleaned off. Better to use a die, screw it onto the tang, cut off the excess, then unscrew/rethread the die off the tang.

Better yet is to hot peen, then sandwich the new grip onto the tang.

"Think not that I am come to send peace on earth: I came not to send peace, but a sword." - The Lord Jesus Christ, from The Gospel According to Saint Matthew, chapter x, verse 34, Authorized Version of 1611
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