Basic Disassembly, Repair & Reassembly of a Jack Knife.

This forum is for posting step by step techniques used in the art of making, customizing, and repairing knives. Please stop by and teach a few things or maybe learn something new from the talented members of AAPK.
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

You better watch out...... :lol:
I see you read & commenting on knife repair threads.
Knife repair & restoration is FAR MORE ADDICTING than just knife collecting! ::nod:: ::dang::
You will stop buying new knives and just buy parts knives in hopes that you can repair them. :mrgreen:

Seriously, repair is more enjoyable to me than just collecting.
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
User avatar
just in case
Posts: 361
Joined: Sat Jul 17, 2010 1:17 am
Location: Georgia

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

Post by just in case »

Dale, When I read these threads I get the same buz i have when Im buying that next pocket knife for my collection.I had a couple of tools you mentioned .I went into the garage and took apart an old knife. now to put it back togather .where do I get that material for the pins ? Thanks ,Jason
"Aint no fun when tha Rabit got tha Gun. "
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

Most Ace & True Value Hardware stores in my area carry brass pin stock.
Hardware stores, craft & model building stores would be the first places I would check.

Have fun & be sure to post pictures of your finished work.
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
User avatar
Elvis
Posts: 2185
Joined: Tue Dec 22, 2009 2:22 pm
Location: Cincinnati, Ohio USA

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

Post by Elvis »

orvet wrote:You better watch out...... :lol:
I see you read & commenting on knife repair threads.
Knife repair & restoration is FAR MORE ADDICTING than just knife collecting! ::nod:: ::dang::
You will stop buying new knives and just buy parts knives in hopes that you can repair them. :mrgreen:

Seriously, repair is more enjoyable to me than jus collecting.
Me too! My money now goes for pin stock, belts for the grinder, handle material, assorted tools (power and hand tools), and a lot of time is spent making my own special purpose tools for knife repair. Every knife is different and presents it's own challenges and that is just repair. Embellishment requires file-work, liner-work, bolster-work when called for and patience. Lots and lots of patience. Drilling a hole in Mother-of-Pearl is a whole lot different than drilling into wood or bone. While there's nothing easy about it, its addictive and every bit as enjoyable as Dale makes it sound. Come to think of it, I can't think of any logic as to why its as enjoyable as it is. It just is. I've still got a decent collection...it just doesn't get the attention it used to, or added to nearly as often.

ENJOY!
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

Elvis wrote: Come to think of it, I can't think of any logic as to why its as enjoyable as it is. It just is. I've still got a decent collection...it just doesn't get the attention it used to, or added to nearly as often.

ENJOY!
That is so true.
I have even been known to take knives from my collection to embelish. ::facepalm::
I may even have sold a knife or two from my collection so I could buy pin stock and sanding belts. :shock:

:lol: :lol: :lol: :lol:
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
User avatar
Toejammer
Posts: 878
Joined: Fri Apr 30, 2010 10:09 pm
Location: Tryon, NE

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

Post by Toejammer »

" Hi, my name is Mike, and I'm a knife repair addict"........... ::facepalm::

Seriously, I don't think I've bought a new knife in months. Everytime I see one I like, I start thinking of how I can replicate it. I think I spend more money on scale materials and pin stock than I do new knives. But the wife figures it's better (cheaper) than guitars and drums !

Say, anyone need a nice electric guitar,....... I need more project knives. ::tease::
A wise man can learn more from a foolish question than a fool can learn from a wise answer.
Bruce Lee
User avatar
Johnj
Posts: 155
Joined: Sun Nov 06, 2011 7:27 pm
Location: Kansas City KS

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

Post by Johnj »

What kind of guitar? 8)
Practicing the dark art of turn-signal usage since 1976.
Image
User avatar
jerryd6818
Gold Tier
Gold Tier
Posts: 39165
Joined: Sun Jan 04, 2009 5:23 am
Location: The middle of the top of a bastion of Liberalism.

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

Post by jerryd6818 »

What Would Gerald Ford Do?
Forged on the anvil of discipline.
The Few. The Proud.
Jerry D.

This country has become more about sub-groups than about it's unity as a nation.

"The #72 pattern has got to be pretty close to the perfect knife."
--T.J. Murphy 2012
User avatar
tjmurphy
Posts: 11129
Joined: Fri Sep 11, 2009 12:41 pm
Location: South of Cincinnati

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

Post by tjmurphy »

So Jerry, you're just gonna push Granny Farquhar to the side?? ::dang::
"There are none so blind as those that refuse to see"

God Bless America - Though I don't know why he would want to.
User avatar
Johnj
Posts: 155
Joined: Sun Nov 06, 2011 7:27 pm
Location: Kansas City KS

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

Post by Johnj »

Ha ha ha!
Practicing the dark art of turn-signal usage since 1976.
Image
User avatar
aprophet2
Posts: 4
Joined: Sat Aug 27, 2011 6:06 pm

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

Post by aprophet2 »

I know this is an older thread but I want to jump on board and thank you for doing it. It answered several of the question I've been struggling with for a few months now. It also begged a few new question for me:

1. What is a "pin spinner" and where do I source one?
2. I've been getting the brass pin stock from my local True Value too but where can I get the nickel silver pin stock?


Thanks again!

BC
User avatar
glennbad
Gold Tier
Gold Tier
Posts: 7353
Joined: Mon May 15, 2006 11:13 am
Location: NH

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

Post by glennbad »

A pin spinner is used to finished and shape pins, especially on bone handles.

Here is one place where you can get the desired items:

http://www.knifemaking.com/product-p/kv250.htm (This is Jantz Supply)

There are other places you can buy this same stuff, or maybe even get better quality, I don't know.

Some of the guys have made their own pin spinners with a set screw.

This will get you pointed in the right direction though.

Make sure to share some pictures of your work. We like knives. :mrgreen:

Glenn
Bearbear
Posts: 21
Joined: Sun Oct 21, 2012 12:43 am

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

Post by Bearbear »

So brass pins are ok to use on the blade pivot pin? I would have thought they would be a tad soft and you might be better off using something harder. Also you used 1/16' pins and state that the pins you removed were .070"........ 1/16" pins are .063" so you have .007" slop correct? So when you peen the pin, the slack is taken up in the hole in the blade or not? I fullt understand that you need a spacer in between the blade and the liner otherwise the blade will jam when you peen it.
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

Bearbear wrote:So brass pins are ok to use on the blade pivot pin? I would have thought they would be a tad soft and you might be better off using something harder. Also you used 1/16' pins and state that the pins you removed were .070"........ 1/16" pins are .063" so you have .007" slop correct? So when you peen the pin, the slack is taken up in the hole in the blade or not? I fullt understand that you need a spacer in between the blade and the liner otherwise the blade will jam when you peen it.

I used nickel silver for the pivot pin; the pin through the bolsters and the pivot hole in the blade. On such a small pin I think brass would be too soft. However, Buck uses a much larger 1/8” brass pin on some of their 110 models, but since it is so much larger there is not a wear problem (at least not that I have ever seen in a 110.

The .070” brass pins were for the rocker pin (that holds the spring in place) and the end pin that holds the back end of the handles & spring in position.
In step 7 of taking the knife apart, I used a 1/16” pin punch (see pic #5) to drive the rocker pin out of the knife.

In the Reassembly step #1 you will see I used .070” brass pins. I replaced the .070” brass pins with ones the same size.




If you have any more questions just post then up here.
I am always happy to answer questions for people learning to work on their own knives.
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
User avatar
glennbad
Gold Tier
Gold Tier
Posts: 7353
Joined: Mon May 15, 2006 11:13 am
Location: NH

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

Post by glennbad »

To my understanding, you don't want an exact tight fit with the pin on the spring rocker hole or the blade tang pivot hole. You want there to be a little slop so that those parts can move just a little bit, otherwise I think you would put undue stress and wear on those pins.

But, I could be understanding that wrong...
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

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
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
Bearbear
Posts: 21
Joined: Sun Oct 21, 2012 12:43 am

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

Post by Bearbear »

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?
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

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.
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
Bearbear
Posts: 21
Joined: Sun Oct 21, 2012 12:43 am

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

Post by Bearbear »

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.
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

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.
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
Bearbear
Posts: 21
Joined: Sun Oct 21, 2012 12:43 am

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

Post by Bearbear »

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
Randy
Posts: 35
Joined: Wed Dec 18, 2013 10:38 pm
Location: Under a rock

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

Post by Randy »

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
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

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:
http://www.allaboutpocketknives.com/kni ... 37&t=23455
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
Randy
Posts: 35
Joined: Wed Dec 18, 2013 10:38 pm
Location: Under a rock

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

Post by Randy »

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.
User avatar
orvet
Gold Tier
Gold Tier
Posts: 19336
Joined: Tue May 16, 2006 6:23 am
Location: Willamette Valley, Oregon

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

Post by orvet »

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:

You agree not to post any abusive, obscene, vulgar, slanderous, hateful, threatening, sexually-orientated or any other material that may violate any laws be it of your country, the country where “All About Pocket Knives” is hosted or International Law. Doing so may lead to you being immediately and permanently banned, with notification of your Internet Service Provider if deemed required by us. The IP address of all posts are recorded to aid in enforcing these conditions. You agree that “All About Pocket Knives” have the right to remove, edit, move or close any topic at any time should we see fit. As a user you agree to any information you have entered to being stored in a database. While this information will not be disclosed to any third party without your consent, neither “All About Pocket Knives” nor phpBB shall be held responsible for any hacking attempt that may lead to the data being compromised.
Dale
AAPK Administrator

Please visit my AAPK store: www.allaboutpocketknives.com/orvet

Job 13:15

"Buy more ammo!" - Johnnie Fain
“Evil is Powerless If The Good are Unafraid.” – Ronald Reagan
Post Reply

Return to “Knife Related Tutorials”