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Worn tang repair - 8OT

Posted: Sun Dec 19, 2021 1:18 am
by Reverand
I got a chance to repair this Scrade Walden 8OT today, just in time to give it to my brother for his birthday on Monday.
I forgot to take a "before" picture, but all of the blades were intact, just rusted and worn. It would have only needed a cleaning, had the tang not been worn out on the Main.
Front 1
Front 1
Front 2
Front 2
1DC1F918-7F12-49C0-B373-90C3A0C943A5.jpeg
Worn tang with a "halo"
Worn tang with a "halo"
I used the method that Olde Cutler showed a week or two ago to "move the hole"!
I peened a nail to fill the hole in the blade, and ground off the "halo" and smoothed the tang.
Then I clamped it up against a new Schrade blade to drill the hole and reprofile the back "shoulder" (where it sits against the spring when open).
"Moved the hole"
"Moved the hole"
Drilling and reprofiling
Drilling and reprofiling
Then I ground the divot out of the spring, and soldered a piece of hacksaw blade in place to build it back up again.
Soldered spring
Soldered spring
It now has great walk and talk!
I did not buff out all of the pitting, but still took it further than I normally do, since this is a gift. After cleaning, oiling, and sharpening this knife, it is one that I can be proud of.

Re: Worn tang repair - 8OT

Posted: Sun Dec 19, 2021 2:04 am
by doglegg
::tu:: ::tu:: ::nod:: ::nod:: ::nod::

Re: Worn tang repair - 8OT

Posted: Sun Dec 19, 2021 2:56 am
by OLDE CUTLER
Glad to see that it worked out so well. I have not done the hacksaw blade patch method yet, but am going to try it.

Re: Worn tang repair - 8OT

Posted: Sun Dec 19, 2021 6:48 am
by orvet
Nice work! Worn tangs are a constant problem! ::tu:: ::tu::
Please let us know how that works long, if possible.

Re: Worn tang repair - 8OT

Posted: Sun Dec 19, 2021 1:21 pm
by zed6309
Great job ::tu:: love that method of re positioning the pivot hole ::tu::

Re: Worn tang repair - 8OT

Posted: Mon Dec 20, 2021 12:50 am
by Reverand
orvet wrote: Sun Dec 19, 2021 6:48 am Nice work! Worn tangs are a constant problem! ::tu:: ::tu::
Please let us know how that works long, if possible.
I had a friend who was a knife mechanic, and a few years back he showed me some similar repairs. He would plug the hole with Silver solder, and his repairs lasted for years.
The solder that I have is too soft for that. I had tried peening in brass before, but it would not stay in place. I had not thought of peening steel until OC showed his method, and I was excited to try it.
I did not take pictures of the process on my Camillus Tip Top barlow, but I did the same tang repair and it also worked great. I clamped the donor blade against the original broken-off tang and matched it fairly well. It now has alligator snap!
I peened the steel repeatedly on both sides, and it is solidly in place. Even when drilling through the edge of it. I don't really expect it to wear much differently than an original blade, but I will update everyone!

Re: Worn tang repair - 8OT

Posted: Mon Dec 20, 2021 12:39 pm
by Meridian_Mike
Beautiful work Reverand!
I enjoyed your outlining of the methods you used to repair the tang area and the spring!

I have a wire welder and I have replaced the metal worn off the spring with a couple of "spot" welds. Then ground them back flat. (Just an idea I wanted to add).....
The area where the spring engages the blade tang doesn't need to "spring" so I figured the harder metal added to a spring in that area would be a 'BONUS".... LOL.

Great idea using the hack saw blade to add the spring metal back!

Your Brother will enjoy and treasure that knife for the rest of his days!
That is definitely a SPECIAL gift!

::tu:: ::tu::

Re: Worn tang repair - 8OT

Posted: Mon Dec 20, 2021 3:17 pm
by Reverand
Meridian_Mike wrote: Mon Dec 20, 2021 12:39 pm Beautiful work Reverand!
I enjoyed your outlining of the methods you used to repair the tang area and the spring!

I have a wire welder and I have replaced the metal worn off the spring with a couple of "spot" welds. Then ground them back flat. (Just an idea I wanted to add).....
The area where the spring engages the blade tang doesn't need to "spring" so I figured the harder metal added to a spring in that area would be a 'BONUS".... LOL.

Great idea using the hack saw blade to add the spring metal back!

Your Brother will enjoy and treasure that knife for the rest of his days!
That is definitely a SPECIAL gift!

::tu:: ::tu::
Thank you, Mike!
A welder is on my wishlist for "someday". I think that it would make a better repair.
I gave the knife to my brother yesterday at church. He did enjoy it!

Re: Worn tang repair - 8OT

Posted: Wed Dec 22, 2021 2:08 am
by muskrat man
At this point I'm welding up around 20-25 worn tangs a month. It is a problem that plagues older knives. This is a great option for someone without a welder and I suspect when properly done it will last a very long time if kept lubricated.