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

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  #1  
Old 09-02-2005, 09:08 AM
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Jaegar Jaegar is offline
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thumb disc - how?

Hi,
I'm working on my own linerlock right now and I'd like to put a thumb disc on it. I can't decide what type of metal to use on the disc, but that shouldn't be too hard. I can easily fashion a circle out of any sort of metal, my problem comes in putting some sort of checkering on the disc.
An example:

This is one of ray roger's knives...

How is it made?
The only two ideas I have are: 1.) use a triangle (not sure of the right term) file, and guestimate with spacing, or 2.) attempt it with a checkering file, but since it's round this won't work well.

Thanks for the help.
-Brian-

P.S. Mr Robinson- I finally ordered the stuff I need. You should be seeing a new barlow in the next month or so.


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Last edited by Jaegar; 09-02-2005 at 10:34 AM.
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Old 09-02-2005, 11:24 AM
justice justice is offline
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if you have a dremel type tool. you can use the cut off disc attachment to make the checkering. it will be a bit rough but it works.
give it a try on some scrap first and see if you like the way it comes out.
here are a few pics of some that ive done with a dremel type rotary tool.



the look is a bit rough but it grabs the thum very well much better then most factory checkering.
its like velcro for skin!
...justin
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Old 09-02-2005, 03:44 PM
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Ray Rogers Ray Rogers is offline
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The disc on my knife was purchased already made from either Halpern or Shefield's. The checkering on the edges is done on a lathe with a knurling tool.....


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Old 09-02-2005, 06:31 PM
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Jaegar Jaegar is offline
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Thanks Mr. Rogers and Justice...
I heard on another forum that Halpern used to carry them, but no more. I'll check with sheffield.
Justice, that never occured to me... I like that, and think I'll try some on scrap.
BTW, did you make the second knife, or was it a kit/modified store-bought? I ask because of the lock assembly. As you can see from another thread, I'm interested in locks like that.
Thanks,
-Brian-


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Old 09-02-2005, 07:10 PM
justice justice is offline
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Brian glad i could help
its a factory made knife by cold steel called "recon 1". then i did some modifacations to it.
i did see the other thredd you started. and i ythink your best bet is to take an existing arc/axis locking knife and strip it down and get to know it better. then use it as a template to copy the lock style.

the cold steel recon 1 goes for about $50. thought its not as good as benchmades lock it might give you some insite.

.....justin
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Old 09-02-2005, 10:08 PM
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Jaegar Jaegar is offline
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Update:
Searched sheffield as Mr. Rogers suggested and they have them for $8.50/10.

I'm going to purchase them there, to make it easier.

I was pretty sure it was factory....
Yep, when I have the money I'll buy a cheap one to tear apart. Thanks.
-Brian-


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