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 Newbies Arena

The Newbies Arena Are you new to knife making? Here is all the help you will need.

Reply
 
Thread Tools Display Modes
  #1  
Old 09-21-2017, 07:37 AM
Rasmus Kristens Rasmus Kristens is offline
Steel Addict
 
Join Date: Jul 2014
Location: Denmark
Posts: 185
Recess for pivot washers in folders - End mill?

Hi all

How I do the best recesses for pivot washers on folder knives?

Is it possible to use and end mill to make a flat bottom hole? If an end mill can't be used, what other tool can i use to drill these flat bottom holes.

I only have a small drill press.
Reply With Quote
  #2  
Old 09-21-2017, 08:42 AM
cnccutter's Avatar
cnccutter cnccutter is offline
Steel Addict
 
Join Date: Mar 2011
Location: Dorena, Oregon
Posts: 191
I'm not sure why your recessing the washer? The whole idea of using one is to keep the blade centered and away from the scales. That way you don't get the scratchs on the side of the blade when opening and closing.

Now, if you want a flat bottom hole an end mill would work great if you have the material secured well because the end mill isn't self centering and will want to wonder.

They also make a step drill bit and a step end mill that have pilots on the ends to keep them centered in the main hole as you drill.
Erik

Last edited by cnccutter; 09-21-2017 at 08:46 AM.
Reply With Quote
  #3  
Old 09-21-2017, 09:28 AM
Ed Caffrey's Avatar
Ed Caffrey Ed Caffrey is offline
Super Moderator
 
Join Date: Jun 2002
Location: Great Falls, Montana, USA
Posts: 4,393
Send a message via AIM to Ed Caffrey Send a message via Yahoo to Ed Caffrey
As Erik said..... washers are usually NOT recessed. Their main purpose is to create space between liners and the blade.

Bearings are recessed, either in the liners or the blade. This is best accomplished with with a piloted counter bore.
Using an end mill is a hit and miss affair....more often then not, an end mill will "walk" slightly, creating an oval instead of a round recess. Finding the correct size counterbore can be a challenge. I use the ones with interchangable pilots, and purchase them from MSC supply or from specialty sources..... in the past I have had such a difficult time finding what I needed, that I actually had some carbide counterbores made to my specifications...... but they were very expensive.


__________________
WWW.CAFFREYKNIVES.NET

Caffreyknives@gmail.com

"Every CHOICE has a CONSEQUENCE, and all your CONSEQUENCES are a result of your CHOICES."

Last edited by Ed Caffrey; 09-21-2017 at 02:48 PM.
Reply With Quote
  #4  
Old 09-21-2017, 09:43 AM
dtec1 dtec1 is offline
Guru
 
Join Date: Aug 2015
Location: ny
Posts: 1,438
I agree if your just using washer like .02 or thiner you don't need to recess them at all.....I have been making bearing flipper folders recently and at that point you do need to recess the bearings partly if its a 1/16th thick bearing (.0625) I recess the pockets .045 so if you lay the bearing in the the balls sit just tall of the linner so the blade can ride on them....The easiest way I have found to do this (it will work IF you want to recess you washers) first you drill the pivot hole (I use a 3/16th pivot) then you get a COUNTER BORE a counter bore has a PILOT BIT that will slide in and out of it... its not a drill its simple a 3/16th (you want the pilot to match the pivot hole) the pilot slides into the counterbore then I put that in the mill (you can use a drill press IF you drill press is perfectly squared but I find the mill more accurate) so then I place a 123 block on the mill table and lay the liner on that so the pilot slides through the pivot hole and keeps everything centered...then you just slowly lower the counterbore down onto the liner it will create a perfect circle centered around the pivot with a flat bottom..you must get a counter bore that is the same size of the diameter of your washers or bearings or SLIGHTLY bigger will work best..I guess it could be done with a end mill but that creates the major problem of how to make sure it is dead centered around that pivot I don't think you will have much luck that way....by the way MSCDIRECT.COM has counter bores in all sizes however I get mine from TIconnector.com because I buy there bearings and they have a carbide counter bore to match....carbide last much longer but I don't know what material your using for the liners steel or titanium but you want at least a cobalt one...I got a couple HSS ones and going into titanium they dulled very very quickly
Reply With Quote
  #5  
Old 09-21-2017, 09:44 AM
dtec1 dtec1 is offline
Guru
 
Join Date: Aug 2015
Location: ny
Posts: 1,438
HAHA ED your post wasn't there when I started to reply ....I guess you type faster than I do!!
Reply With Quote
  #6  
Old 09-21-2017, 01:04 PM
Rasmus Kristens Rasmus Kristens is offline
Steel Addict
 
Join Date: Jul 2014
Location: Denmark
Posts: 185
Thanks guys, i will get some thin washers instead. I can get them i a wide variety of materials, nylon, fibre, steel, stainless steel, copper and brass. Which material is best suited for the task?

Do you lube up the pivot and washer before assembly?
Reply With Quote
  #7  
Old 09-21-2017, 01:46 PM
cnccutter's Avatar
cnccutter cnccutter is offline
Steel Addict
 
Join Date: Mar 2011
Location: Dorena, Oregon
Posts: 191
I use bronze or Stainless in my folders.

Erik
Reply With Quote
  #8  
Old 09-21-2017, 01:52 PM
dtec1 dtec1 is offline
Guru
 
Join Date: Aug 2015
Location: ny
Posts: 1,438
I don't use washers much as I make bearing folders but Erik just said what everyone always told me bronze are the best....bronze wasn't on the list you mentioned if you cant find them try and look for bronze sheets or shims in a thickness you could use like .02 you will get just a thin sheet but its not hard to cut through it with siccors and make your own washers with it.
Reply With Quote
  #9  
Old 09-21-2017, 02:38 PM
epicfail48 epicfail48 is offline
Enthusiast
 
Join Date: Aug 2017
Location: Springfield Mo
Posts: 95
Quote:
Originally Posted by Rasmus Kristens View Post
Thanks guys, i will get some thin washers instead. I can get them i a wide variety of materials, nylon, fibre, steel, stainless steel, copper and brass. Which material is best suited for the task?

Do you lube up the pivot and washer before assembly?
Phosphor bronze is my personal favorite, I use it for pivots and washers in butterfly knives. Unbelievably smooth actions on those, even without lubrication. Course, any moving part should be properly lubricated. The grade I use is C51000 I believe, been a while since I bought it though. McMaster carries it in sheet stock if you want to cut your own washers, if not a lot of the knife supply places sell the washers pretty cheap.

Teflon washers would be my second choice, but its a distant second. Really, I think bronze is the way to go
Reply With Quote
  #10  
Old 09-21-2017, 02:49 PM
Ed Caffrey's Avatar
Ed Caffrey Ed Caffrey is offline
Super Moderator
 
Join Date: Jun 2002
Location: Great Falls, Montana, USA
Posts: 4,393
Send a message via AIM to Ed Caffrey Send a message via Yahoo to Ed Caffrey
My personal choice is Bronze, in .010" thickness.


__________________
WWW.CAFFREYKNIVES.NET

Caffreyknives@gmail.com

"Every CHOICE has a CONSEQUENCE, and all your CONSEQUENCES are a result of your CHOICES."
Reply With Quote
  #11  
Old 09-22-2017, 01:07 AM
Rasmus Kristens Rasmus Kristens is offline
Steel Addict
 
Join Date: Jul 2014
Location: Denmark
Posts: 185
Quote:
Originally Posted by epicfail48 View Post
... Unbelievably smooth actions on those, even without lubrication. Course, any moving part should be properly lubricated...
What kind of lube should be used to properly lubricate the pivot? Its a simple frictions folder.

I just found a source of affordable phosphor bronze in 0,02" thickness. I will be cutting some shims soon :-)

Thanks
Reply With Quote
  #12  
Old 09-22-2017, 02:15 AM
epicfail48 epicfail48 is offline
Enthusiast
 
Join Date: Aug 2017
Location: Springfield Mo
Posts: 95
Quote:
Originally Posted by Rasmus Kristens View Post
What kind of lube should be used to properly lubricate the pivot? Its a simple frictions folder.

I just found a source of affordable phosphor bronze in 0,02" thickness. I will be cutting some shims soon :-)

Thanks
For a knife, dry film lubricants. You dont want anything wet, i.e oils and the like, those attract way too much dust and grime thatll eventually lock up the action. My personal favorite knife lube is WD-40 Specialist PTFE spray. Pretty cheap, drys to a thin film that doesnt gather crap and is buttery smooth.
Reply With Quote
  #13  
Old 09-22-2017, 03:51 AM
Rasmus Kristens Rasmus Kristens is offline
Steel Addict
 
Join Date: Jul 2014
Location: Denmark
Posts: 185
Thanks Epic

Is it also suitable for coating ny high carbon knifeblades as corrosions protection, or is regular WD-40 better for this?
Reply With Quote
  #14  
Old 09-22-2017, 05:53 AM
dtec1 dtec1 is offline
Guru
 
Join Date: Aug 2015
Location: ny
Posts: 1,438
for coating the blades get some ren. wax I work with a lot of stainless but I have carbon blades from a couple years ago when I started making knives that I coated with this stuff and they are still fine

this stuff
http://usaknifemaker.com/renaissance...z-can-262.html
Reply With Quote
  #15  
Old 09-22-2017, 07:05 PM
epicfail48 epicfail48 is offline
Enthusiast
 
Join Date: Aug 2017
Location: Springfield Mo
Posts: 95
Quote:
Originally Posted by Rasmus Kristens View Post
Thanks Epic

Is it also suitable for coating ny high carbon knifeblades as corrosions protection, or is regular WD-40 better for this?
Dunno, can't say ive ever tried using it for corrosion protection. I don't imagine itd work as well as an oil though. I've used Remoil and Ballistol both, both do a good job of corrosion protection. That said, so does 3-in-1, it really doesn't take much to keep the rust off. Wax can work well too, but the oils easier to apply
Reply With Quote
Reply

Tags
bearing, blade, brass, drill, flat, folder, knife, knives, made, make, material, mill, pivot, post, press, scales, small, special, stainless, stainless steel, steel, supply, thickness, tool, washers


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
looking for 5/32 washers SVanderkolff Knife Network Community 1 02-01-2010 03:58 PM
What size of washers do you use on liner locking folders? Frank Niro The Folding Knife (& Switchblade) Forum 12 06-23-2009 06:27 PM
Here are the 2 folders with devin Thomas folders Don Robinson The Folding Knife (& Switchblade) Forum 8 06-06-2008 08:49 AM
Washers BMWtje The Folding Knife (& Switchblade) Forum 4 02-17-2006 12:59 AM


All times are GMT -5. The time now is 02:01 AM.




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