making an otf knife

chiliman777 · Post by **chiliman777** » Tue Jan 06, 2004 11:38 pm

Hey does anyone have drawings of how to build an out the front knife... i was thinking of making an original design but need to know how the interior works with the knife spring and push buttons etc. anything will be helpful, either info or pics or web links. thanks

Teddy · Post by **Teddy** » Tue Jan 06, 2004 11:49 pm

chiliman777 wrote:Hey does anyone have drawings of how to build an out the front knife... i was thinking of making an original design but need to know how the interior works with the knife spring and push buttons etc. anything will be helpful, either info or pics or web links. thanks

Your best bet would probably be to buy one yourself and take it to bits...

They aren't very expensive... not the Italian ones anyway..

Best wishes
Teddy

missaman · Post by **missaman** » Wed Jan 07, 2004 12:36 am

I agree buy some cheap clones and take them apart to see how they work
Missaman

chiliman777 · Post by **chiliman777** » Wed Jan 07, 2004 1:26 am

Does anyone have any broken down otf knives that they could take pics of and post for me? Im not sure i would be able to buy one.

Stone Knife · Post by **Stone Knife** » Wed Jan 07, 2004 9:06 am

Here's a CFO II I'm working on. More pics to follow...

Note: the mainspring is mounted on a wooden dowel so I won't loose it or bend it up accidentally. =)

chiliman777 · Post by **chiliman777** » Thu Jan 08, 2004 3:08 am

Hey thats a big help thanks. Any other pics you get would be a big help as well. If its possible could you just take a quick shot of where all the pieces go? im still not sure on a few of them. Also, does this blade retract automatically? how? thanks

Stone Knife · Post by **Stone Knife** » Thu Jan 08, 2004 10:56 am

The piece pictured at the very top is the retractor handle. It rides in a track inside the frame just below it. It does not retract automatically. The Microtech Ultratech or Scarabs do, in a way, but that is accomplished with opposing springs and a tension clutch. Start here with a single-action and work your way up to a D/A OTF.

I'll try to take/post some more this morning when I get home...
BTW you can obtain a HALO clone for about $14, for example here: http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... gory=43335
It would be a good reference piece for you or anyone wanting to see how these are done...

Stone Knife · Post by **Stone Knife** » Thu Jan 08, 2004 5:40 pm

OK I had to make them big to show the details, this is scaled for 1280 x 1024 resolution.

The only things different in these pictures than what it'd be like assembled is the mainspring is not loaded, and the plunge-lock does not have its' little return spring in the hole:

Hope this is useful.

chiliman777 · Post by **chiliman777** » Fri Jan 09, 2004 12:29 am

Hey thanks alot. I know this may be annoying but i really appreciate it ...i dont know all that much. To retract the blade basically all that you do is push down on the metal piece opposite the puch button? what makes this spring up to lock it after the knife is pushed? Also, is the retractor handle just held in by the friction by the little pin on that row of holes on the retractor handle? thank you very much.

Stone Knife · Post by **Stone Knife** » Fri Jan 09, 2004 7:08 am

The metal piece on the frame behind the blade is a leaf lock. when it is moved aside, the blade is free to retract. There is a small spring under the leaf lock.
The retractor is held in the upper frame in tracks machined into the upper frame. The row of holes at the rear of the retractor has no mechanical function.
The retractor mates with the small pin in the lower left rear of the blade. directly opposite the retractor pin is an empty hole on the other blade 'leg'.

BennytheBlade · Post by **BennytheBlade** » Mon Jan 12, 2004 5:42 pm

Awesome, educational pics SK-
thanks.
I havent had the guts to undo my STC.

tanto · Post by **tanto** » Thu Jan 15, 2004 9:10 am

Graet pictures!! Thank you.

David

Stone Knife · Post by **Stone Knife** » Fri Jan 16, 2004 12:41 pm

Benny- I don't blame you on the STC- if it ain't broke... plus there's the legendary Dalton customer service which is pretty much lacking in MT anymore.

David- You are very welcome.

I am in the process of putting a HP on the blade and doing some interior tuning on this CFO-II here, is why it's open at all.

rapidboy1 · Post by **rapidboy1** » Tue Mar 09, 2004 8:41 pm

Just came across this if it helps.

http://www.knifeforums.com/ubbthreads/s ... #Post89919

Stone Knife · Post by **Stone Knife** » Wed Mar 10, 2004 12:11 pm

Mr. "chiliman" hasn't posted at Talkblade since 2/16. I think this is a waste of time.

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