Basic Disassembly, Repair & Reassembly of a Jack Knife.

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orvet
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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby orvet » Fri Nov 16, 2012 10:39 pm

A lot of that depends on the handles, Glenn.
When working with bone, ivory, some woods and other brittle handle materials you should have the holes in the handle material itself oversized so that when you peen the pin, or spin a head on the pin, there is room enough for the pin to expand so that it does not crack the bone.

However, if the pin is too much undersized from the hole in the spring & liners you can have enough play that it does not properly tension the springs. This results in weak snap.

In some cases you may have to drill a larger hole in the bone itself while leaving a smaller hole in the liner in order to get the springs tight and not crack the bone.

I have one like that I am working on now. I have cracked the pile side bone twice now! :x
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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby Bearbear » Sat Nov 17, 2012 9:47 am

Dale, yep I have another question, you used a .070" pin on the blade pivot same size as the one you removed. Where would I get such a pin, presuming that is the size required, I thought they were only available in 1/16", 3/32", 1/8" etc?

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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby orvet » Sat Nov 17, 2012 1:46 pm

Not to be cryptic, but pin stock is where you find it.

In other words, while it isn't exactly everywhere, it is more common than one would first think.
Brass pin stock is probably the easiest to find. I get most of mine through my local Ace Hardware Store. Most of it they carry in 3’ lengths and sell for less than you will pay for 2’ of the same brand from other sources. I have also found a good supply of brass & stainless steel pin stock at my local True Value Hardware stores as well.

Many hobby stores, both online & local, will carry brass pin stock, sometimes stainless steel and occasionally a limited supply of nickel silver.

The best variety of sizes of nickel silver pin stock that I have found is at Jantz Supply. I find their website somewhere between abysmal and impossible to use, but if you call them and ask for a print catalog you can see the sizes they have.

Here is a link to a thread I posted some time ago on sources for pin stock:
viewtopic.php?f=37&t=23455


When I must have a certain size pin stock and don't have anything close to the proper size, I will turn down a piece of larger stock by chucking it in the drill press and taking it down with a file & sandpaper to the proper size.
Another method is to chuck the stock in a drill and spin the stock against a running belt sander. That takes it down fast, but it easy to take it down too far unless you are careful. It takes some practice to get proficient at this method.



Hope this helps.
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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby Bearbear » Mon Nov 19, 2012 9:46 am

Ok thanks for that I will have to enquire over here and see who has pin stock in ctock. I shall remember your suggestion on how to size it. Bear.

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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby orvet » Tue Nov 20, 2012 5:19 am

BB, I forgot you are in Australia. ::doh::
If all else fails let me know and I can ship some pin stock down there to ya'.
The shipping will make it pretty dear though, but what ya' gonna' do? ::shrug::

If you do happen to find some nickle silver pin stock that is 11 gauge (wire gauge) which is .090" =/- .002, please let me know.
I have been looking for some for a long time! I cannot seem to find any of it anywhere. ::dang::
The one jewelery supply place that listed it is now out of stock.
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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby Bearbear » Tue Nov 20, 2012 9:04 pm

Dale, yep Australia ::ds:: we love it here. I get over to the USA every other year hunting so I can look around when over next year. Postage; actually it is cheaper for me to have a knife sent from the USA to Australia - average $3 - $4 than it is to have one sent from 20 miles down the road here ($6.60). So sending some pin stock to me would only be a few dollars I am happy to send you some $ up front. If you wish to send me a few left over pieces that you don't necessarily want. We do not have a knife supply here that has pins stock unfortunately. Enjoy your day! :D

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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby Randy » Mon Dec 23, 2013 7:55 am

Sorry, new guy here. I haven't been everywhere in all the different threads and this was close to the top so I just wanted suggest one possible source that may or may not have been thought of. If it has...never mind.

Welding supply shops will have nickle/silver brazing rod, brass brazing rod, pure silver brazing rod, and quite a few different sizes.

Sorry to drag this thread out of the grave.

Randy/the new guy

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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby orvet » Wed Dec 25, 2013 11:32 pm

No problem Randy, there is a lot to read here.
Here is a good thread devoted to the topic of where to find pin stock:
viewtopic.php?f=37&t=23455
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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby Randy » Thu Dec 26, 2013 10:59 pm

Thanks orvet.

Still treading lightly as I've been banned from a few sites for the simple act of speaking out of turn or posting a simple suggestion in the wrong place.

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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby orvet » Sat Dec 28, 2013 10:06 pm

Randy wrote:Thanks orvet.

Still treading lightly as I've been banned from a few sites for the simple act of speaking out of turn or posting a simple suggestion in the wrong place.


I think we are less sensitive to that on AAPK than most forums.
The things that will get a member banned here are spelled out in the AAPK User Agreement.
Most of the infractions that will result in banning are contained in the following excerpt from the User Agreement:

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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby Randy » Tue Dec 31, 2013 8:57 pm

::tu:: ::groove:: ::ds::

It's sooo much healthier for you guys to see this emoticon than it would be for you to see me doing that in person! :shock:

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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby Mammothstag » Fri May 12, 2017 1:33 am

orvet wrote:Not to be cryptic, but pin stock is where you find it.

In other words, while it isn't exactly everywhere, it is more common than one would first think.
Brass pin stock is probably the easiest to find. I get most of mine through my local Ace Hardware Store. Most of it they carry in 3’ lengths and sell for less than you will pay for 2’ of the same brand from other sources. I have also found a good supply of brass & stainless steel pin stock at my local True Value Hardware stores as well.

Many hobby stores, both online & local, will carry brass pin stock, sometimes stainless steel and occasionally a limited supply of nickel silver.

The best variety of sizes of nickel silver pin stock that I have found is at Jantz Supply. I find their website somewhere between abysmal and impossible to use, but if you call them and ask for a print catalog you can see the sizes they have.

Here is a link to a thread I posted some time ago on sources for pin stock:
http://www.allaboutpocketknives.com/kni ... 37&t=23455


When I must have a certain size pin stock and don't have anything close to the proper size, I will turn down a piece of larger stock by chucking it in the drill press and taking it down with a file & sandpaper to the proper size.
Another method is to chuck the stock in a drill and spin the stock against a running belt sander. That takes it down fast, but it easy to take it down too far unless you are careful. It takes some practice to get proficient at this method.



Hope this helps.

Not sure I'm replying correctly, new to the site. I work with mineralized bone and "fossil Ivory's almost exclusively and found if you use a jantz supply # 51 number drill bit ( .067 ) it works perfectly with brass or nickel silver 1/16" ( .0625 ) pin stock. Buy the 12" rod stock, the 1" long pins are cut from a huge roll and have a slight curve to them.

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Re: Basic Disassembly, Repair & Reassembly of a Jack Knife.

Postby Ga Red » Thu Nov 23, 2017 12:48 pm

Thank you so much for the pictures at first. Where can I buy a Spring Compressor( Camillus type knife vise) and is that Micarta or leather in the Spring Compressor.. What type single edge razor blades have yall found to be the best to cut pins. I took and clamped a 1/4 inch piece of steel on a steel plate and then used a magnet to hold the razor blade to cut the first pin. Red


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