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Isaac S
Member

Registered: 05/27/09
Posts: 1029
Loc: Doe Run, PA
Saw bolt repair
      #6393040 - 05/31/13 11:42 PM

Most of us who use (or collect) old handsaws have run across damaged saw bolts or nuts. While the plain bolts are easy enough to replace or reproduce, the old cast medallions have no modern equivalent. When the medallion is from a less prolific manufacturer than Disston, it can be worthwhile to try salvaging it. This is how I repaired the medallion from a Tyzack backsaw.

I have a more complete writeup on my blog, but the highlights are here.

The shank was too far gone to salvage, so I began by cutting that off. After a little bit of machining, the new shank and the medallion were mated and joined with silver bearing solder.









After a little cleanup, the new medallion is ready for the next hundred years of service.



--------------------
Isaac
Blackburn Tools - woodworking tools old & new
Blog


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RonB1957
Member

Registered: 02/15/11
Posts: 1084
Loc: IL. near St. Louis
Re: Saw bolt repair new [Re: Isaac S]
      #6393045 - 05/31/13 11:53 PM

Nice job as always, Issac.

Hey! Aren't you supposed to be making saws right now? Put away the play silver and back to work, I say.

--------------------
BontzSawWorks.net


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Isaac S
Member

Registered: 05/27/09
Posts: 1029
Loc: Doe Run, PA
Re: Saw bolt repair new [Re: RonB1957]
      #6393047 - 06/01/13 12:01 AM

Yeah, I should be out in the shop, but this was a nice diversion. I'll head back out there once it cools down enough that I don't drip all over somebody's saw...

--------------------
Isaac
Blackburn Tools - woodworking tools old & new
Blog

Edited by Isaac S (06/01/13 12:04 AM)


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Window Guy
Honored Veteran

Registered: 06/03/01
Posts: 12101
Loc: St. Cloud,Fl., USA
Re: Saw bolt repair new [Re: Isaac S]
      #6393076 - 06/01/13 05:05 AM

Isaac ........ Great job on the Medallion thanks for sharing the step by step procedure. Glad it was salvageable.

Steve


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GNP
Rick Rolled >+1

Registered: 12/26/06
Posts: 11495
Loc: KY
Re: Saw bolt repair new [Re: Isaac S]
      #6393142 - 06/01/13 07:42 AM

Nice fix.

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Blacky's BoyModerator
Moderator

Registered: 06/17/07
Posts: 10664
Loc: Buck's County PA USA
Re: Saw bolt repair new [Re: Isaac S]
      #6393146 - 06/01/13 07:49 AM

Nice save! You know, I never learned how to solder like that. I should really give it a try.


Oh, and I HEAR you about waiting until the evening to work out in the shop! But it didn't drop below 80 until after 9:00 pm last night. By then it was too late for me to start anything.

--------------------
See ya around,
Dominic
------------------------------
Light travels faster than sound. This is why some people appear bright until you hear them speak


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MarvW
Member

Registered: 08/27/07
Posts: 3246
Loc: Northern California
Re: Saw bolt repair new [Re: Isaac S]
      #6393205 - 06/01/13 09:31 AM

Nice fix, Isaac. I like your holding jig when doing the silver soldering. Or "hard" soldering as it is sometimes referred to. I noticed you did a small counterbore to center the new screw thread. Great idea!

--------------------
Catchalater,
Marv


I did then what I knew how to do. Now that I know better, I do better.”
― Maya Angelou

I'm working toward my PHD. (Projects Half Done)


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Brent V.
Member

Registered: 09/14/12
Posts: 161
Loc: Portland, OR
Re: Saw bolt repair new [Re: Isaac S]
      #6393358 - 06/01/13 01:01 PM

Nice work on the medallion. I love seeing this kind of post with a series of photos and descriptions.

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Corneel
Member

Registered: 12/28/07
Posts: 2038
Loc: The Netherlands
Re: Saw bolt repair new [Re: Brent V.]
      #6393380 - 06/01/13 01:36 PM

Well done. It's quite a miracle how you clamped that medailion in the chuck of the lathe.

--------------------
seekelot.blogspot.com


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Timberwolf
Honored Veteran and lant something or other

Registered: 06/05/02
Posts: 65223
Loc: Sparkling Clearwater, Florida
Re: Saw bolt repair new [Re: Isaac S]
      #6393472 - 06/01/13 03:48 PM

Looks good Isaac..I have one that I want to repair some day..I'm not a real big fan of "silver bearing" solder, since it is mostly lead and tin, but for this job, I think the bond is as strong as it needs to be.

I have had an oxy-acetylene "Little Torch" for many years and used it in jewelry making with gold and sterling silver that is ideal for small jobs like this, so I will be "hard" soldering it. {if I ever get around to it}

--------------------
"Remember, we are First Marines, and all the communist SOBs in the world cannot stop us from going where we intend to go".."Chesty" Puller Col. USMC..Chosin Reservoir, Korea 1950

Jack Edgar USMC.. Korea '51/'52






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