MEMBER ITEMS FOR SALE
Custom Knives | Other Knives | General Items
-------------------------------------------
New Posts | New PhotosAll Photos



Go Back   The Knife Network Forums : Knife Making Discussions > Custom Knife Discussion Boards > Knife Making Discussions > The Folding Knife (& Switchblade) Forum

The Folding Knife (& Switchblade) Forum The materials, techniques and the designing of folding knives.

Reply
 
Thread Tools Display Modes
  #1  
Old 06-05-2010, 06:02 PM
DaveL DaveL is offline
Skilled
 
Join Date: Oct 2002
Location: Tennessee
Posts: 449
Do any of you "cock" the slipjoint, how and with what

I have not used one but have friends that load the spring in the slipjoint with a special tool they made just for that reason. Do you cock or load your backspring and if so, tell me how you do it.
Reply With Quote
  #2  
Old 06-06-2010, 08:09 AM
Don Robinson's Avatar
Don Robinson Don Robinson is offline
Hall of Famer
 
Join Date: Jan 2003
Location: Brownsville, Texas
Posts: 4,873
At assy. I drive a pointed pin all the way thru the back end and spring. That forces the spring to load. Then I just cut the pin off flush and finish the knife.

There are lots of ways, another is to use a wedge in your vise.
Reply With Quote
  #3  
Old 06-07-2010, 10:18 AM
pipecrafter's Avatar
pipecrafter pipecrafter is offline
Skilled
 
Join Date: Jan 2005
Location: Western Rhode Island
Posts: 432
I set preload similarly to the way Don describes. At assembly, I move the rearmost spring pin hole so that I have about 3/64" of offset at the lock face on the spring, and then manhandle the blade into place - though I could just as easily manhandle the rear pin into its hole as well.


__________________
Kurt Huhn
pipecrafter@pipecrafter.com
http://www.pipecrafter.com
Reply With Quote
  #4  
Old 06-07-2010, 11:54 AM
CWKnifeman CWKnifeman is offline
Master
 
Join Date: Aug 2002
Location: Burleson, Texas
Posts: 851
To pre-load the spring here is something that I was told by J.B. Moore one of the oldest and one of the best foldermakers that I have had the prevlidge of knowing. Get a large double C vice-grips, A 2 x 4 x 8 block of wood, and some try pins.

I do not drill my center pin into the liners until the blade and spring are heat treated, and ready for assembly. Place the liners on the wood and drill for the pivot pin and the heal pin. Place one liner outside down and place the pins in both the blade-pivot and the spring heal pin. Now using the vice grips against the edge of the wood and against the back of the spring and slowly increase the tension to the point that it will walk and talk properly. This is the point that I drill the center pin into the liner. Then remove everthing and place the non drilled liner outside down onto the block and pin, then place the drilled liner and drill the center pin. Now you are ready to assemble the complete knife.

I have been using this method for making slip-joints for six years now, and you can put the proper amount of tension on the spring.
I hope that this helps some of you.
Curtis


__________________
Curtis Wilson
Wilson's Custom Knives, Engraving, and Scrimshaw
Reply With Quote
  #5  
Old 06-09-2010, 07:22 AM
Cubane Cubane is offline
 
Join Date: Apr 2007
Posts: 4
I have only just started using the same method as Curtis. It works a treat and has really helped improve the action on my knives. It was a bit hit and miss before. I would recommend setting the tension a little past where you want it to end up as you will take a little off the back when you profile the liners and handle material. Then you can adjust the final spring tension by removing material from the inside of the spring between where the kick lands on it and the center pin.

Alistair
Reply With Quote
  #6  
Old 06-10-2010, 02:30 AM
CWKnifeman CWKnifeman is offline
Master
 
Join Date: Aug 2002
Location: Burleson, Texas
Posts: 851
Alistair, I'am glad to see that someone else is using something that I was shown a long time ago. Best of luck in youe folder making .
Curtis


__________________
Curtis Wilson
Wilson's Custom Knives, Engraving, and Scrimshaw
Reply With Quote
  #7  
Old 07-11-2010, 10:17 AM
joe sangster's Avatar
joe sangster joe sangster is offline
Skilled
 
Join Date: Oct 2002
Location: vienna , ga
Posts: 302
Curtis &/or Alistair,

Do either of you have any photos or WIP's showing your method of loading the spring. Sounds like a great way to do it but not quite able to visualize placement of double C visegrip .

Thanks ,

Joe
Reply With Quote
  #8  
Old 07-12-2010, 05:01 AM
CWKnifeman CWKnifeman is offline
Master
 
Join Date: Aug 2002
Location: Burleson, Texas
Posts: 851
Joe I am doing som heat treat for someone else as well as working on a couple of folders tomorrow so I will take some pic's of the tension loading process and get them posted for you.
Curtis


__________________
Curtis Wilson
Wilson's Custom Knives, Engraving, and Scrimshaw
Reply With Quote
  #9  
Old 07-12-2010, 06:16 AM
joe sangster's Avatar
joe sangster joe sangster is offline
Skilled
 
Join Date: Oct 2002
Location: vienna , ga
Posts: 302
Thanks, Curtis ! I appreciate it greatly.

Joe
Reply With Quote
  #10  
Old 07-14-2010, 09:09 PM
CWKnifeman CWKnifeman is offline
Master
 
Join Date: Aug 2002
Location: Burleson, Texas
Posts: 851
joe this is how it works; I use an 11" vice grip shown in the first picture. Then I place the pre drilled liner on a piece of 2" x 4" and drill for the pivot and the heel pin into the wood, place the liner on the board with the blade and the heel pins in the hole. Set the load tension as shown in the second picture. In the next picture the blade at the half open position. In the last Picture the blade is in the closed position. The load should be checked in all positions. Once the blade and spring tension is set you can drilll the center pin hole. once the center pin is drilled into the one liner place the second liner with the first and pin and clamp togather for drilling the other center pin.

Using this method needs to be done after the blade and spring have been centered and evened with the risr and fall indicator as shown in the other pictures, and most importantly after heat treating is done.

I hope that this is of some help.
Curtis
Attached Images
File Type: jpg 11 inch vice grip_edited-1.jpg (114.3 KB, 117 views)
File Type: jpg Open position_edited-1.jpg (106.1 KB, 144 views)
File Type: jpg half closed_edited-1.jpg (119.0 KB, 139 views)
File Type: jpg closed position_edited-1.jpg (114.6 KB, 135 views)
File Type: jpg rise and fall indicator with different pivots.jpg (159.3 KB, 129 views)


__________________
Curtis Wilson
Wilson's Custom Knives, Engraving, and Scrimshaw

Last edited by CWKnifeman; 07-14-2010 at 09:11 PM.
Reply With Quote
  #11  
Old 07-15-2010, 07:37 AM
joe sangster's Avatar
joe sangster joe sangster is offline
Skilled
 
Join Date: Oct 2002
Location: vienna , ga
Posts: 302
Curtis,

Thanks for the excellent explainations & photos. That makes things perfectly clear ! Can't wait to give this method a try . I think it will really improve things.

Joe
Reply With Quote
  #12  
Old 07-16-2010, 05:06 AM
Cubane Cubane is offline
 
Join Date: Apr 2007
Posts: 4
The way I do it is pretty much exactly the same except I always have the vice grips just behind the pivot hole. That way I am getting the strength of the spring up to the pivot hole I found it hard to get the feel of the tension when I had the vice grips half way up the spring.

Alistair
Reply With Quote
  #13  
Old 07-16-2010, 10:42 AM
Don Robinson's Avatar
Don Robinson Don Robinson is offline
Hall of Famer
 
Join Date: Jan 2003
Location: Brownsville, Texas
Posts: 4,873
I'm working on a new book titled (so far) "slipjoints my Way". When it comes out in a few weeks it demonstrates how I tension the spring.
Reply With Quote
  #14  
Old 07-18-2010, 04:29 PM
Frank Niro Frank Niro is offline
Master
 
Join Date: Jun 2002
Location: Blind Bay B.C. Canada
Posts: 866
Thanks Don. I haven't made one yet but I may yet go for it. Frank


__________________
Without collectors there would not be makers.
Reply With Quote
  #15  
Old 07-18-2010, 05:30 PM
Don Robinson's Avatar
Don Robinson Don Robinson is offline
Hall of Famer
 
Join Date: Jan 2003
Location: Brownsville, Texas
Posts: 4,873
Frank, as you know, I make just about anything, but for some reason I've gone back to slipjoints because I like to do them so much. This isn't to say I don't make other types, it just seems to be my preference right now.

Try it, you'll like it!!!
Reply With Quote
Reply

Tags
blade, folder, heat treat, knife, knives


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
1st randall "hunter" building project: delivering the "keys" The "Captain" Randall Knives Forum 13 01-13-2006 10:30 AM
"Topping off": Randall "fighter" buildong project, stage #4 The "Captain" Randall Knives Forum 40 10-30-2005 09:07 PM
"Old" 1970's Joe Kious Slipjoint TikTock This Old Knife 6 10-18-2005 09:13 PM
"Wounded In Action": Randall Model 15 "Airman" knife Buddy Thomason Randall Knives Forum 4 04-26-2005 03:52 PM
Currie Smith "CS" Scrimshaw "Cheetah Eyes" aggie-05 The Display Case 2 10-05-2004 12:34 PM


All times are GMT -5. The time now is 12:00 PM.




KNIFENETWORK.COM
Copyright © 2000
? CKK Industries, Inc. ? All Rights Reserved
Powered by ...

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
The Knife Network : All Rights Reserved