cracked liners

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dobro59
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cracked liners

Post by dobro59 »

I have not done a lot of repair or rehandling of knives.But i was told not to rehandle a knife with cracked liners.Why?One thing i can do
is solder with the best of them,A/C work for 30 yrs.I have soldered 2 two pocket knives liners up and am now ready to rehandle.Used very low temp solder and open and close snap has not been affected at all.Shouldn't these be allright?Have i not taken something into account? ::shrug:: ::shrug:: ::hmm:: ::undecided:: :?
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caddyman1973
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Re: cracked liners

Post by caddyman1973 »

Well, The question that comes to my mind is...I wonder what caused the liners to crack? Maybe liners too thin to begin with? ::shrug:: It may be easier for alot of people just to make new ones that are a little thicker than stock, it would be for me. I have little to none soldering skills, but I do have plenty of tools to make liners. That may be why they say "not to solder the liners". I do have a low temp soldering kit but I have never used it yet. Hopefully one of the "real" knife repairmen will give us some insight. Bill
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Bret888
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Re: cracked liners

Post by Bret888 »

I think Caddyman is right, you are best off, to cut out new liners. That being said, if you have a good solder joint, and your scales fit tightly between the bolsters, and you have a good secure glue and pin job, the scales may take the strain off the liners, and be okay? Try it and let us know how it holds up? I did one, with brazing rod, and it worked , but it would have been less trouble to cut out a new one. Technically, this was a weld, since the base metal and the filler are mixing.
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muskrat man
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Re: cracked liners

Post by muskrat man »

normally cracked liners are caused by out gassing of celluloid handles caddy. silver solder can work but I recommend making new liners but it isn't exactly necessary
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caddyman1973
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Re: cracked liners

Post by caddyman1973 »

Thats one cause I didnt think of. Thanks MM.
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whitebuffalo58
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Re: cracked liners

Post by whitebuffalo58 »

I've never tried soldering liners. But just thinking about it, if the liners cracked the first time as solid pieces of metal, aren't the odds pretty high that they would crack again with just a solder joint? I can't imagine any solder joint being stronger then the original solid piece. ::shrug::

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orvet
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Re: cracked liners

Post by orvet »

99% of the cracked liners I have seen were caused by off-gassing celluloid. In the gaseous form, the sulfuric acid released (by the off-gassing) weakens the liner and it typically cracks at the point of greatest stress, i.e. the pivot pin. If you soldier cracked liner, the weakened liner may crack elsewhere, or it may not.
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IMHO, it is far faster, easier & less expensive to make a new liner.
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dobro59
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Re: cracked liners

Post by dobro59 »

MM you are spot on,one was an old 93047 cracked ice handle,the other a camillus streamline with that old funky floor tile looking
handle.After reading all comments,since they are not cracked the whole width of the liner,i think i will rehandle and hope for the best. :) :)
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Elvis
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Re: cracked liners

Post by Elvis »

If you do solder rather than have it brazed, I recommend one of the harder silver solders. They're available on ebay and are more likely to hold-up than the usual soft silver solder we normally use to solder bolsters on with.
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Toejammer
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Re: cracked liners

Post by Toejammer »

I've had to make new liners a few times. I use the K&S brass stock you can get at Ace Hdw, works great and not as difficult. Just remember to keep the old liners / scales for the hole templates !
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dobro59
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Re: cracked liners

Post by dobro59 »

Well,I soldered up the liners on the streamline and it's been 3 yrs and it is holding up just fine. Rehandled it with some different more eye catching mottled plastic to keep the original look. Have not got around to the 93047,solder job still looks good but no handles put on yet.
I think soldering may be ok if the liner is not cracked all the way across and you have to start with two pieces.
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