How to "loosen up" a folder?


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SleazyRider
May 3, 2013, 10:36 PM
I know it's a "low end" knife but I like it just the same, so I'd appreciate any and all advice on how to fix it. The problem is, this little folder is way too tight, to the point that I need to use pliers to open both blades. It appears that the rivets have been set too tightly.

So how to I loosen it up? I've never had a folding knife apart, but I have good hands and a well-equipped machine shop at my disposal. Should I drill out the rivets and replace them with screws? What kind? Where do I get them?

C'mon, guys, take me under your wing and walk me through this! :)

http://i459.photobucket.com/albums/qq315/Magnageek/DSCN1391_zps9a4fa9bb.jpg (http://s459.photobucket.com/user/Magnageek/media/DSCN1391_zps9a4fa9bb.jpg.html)

http://i459.photobucket.com/albums/qq315/Magnageek/DSCN1390_zpse381be2a.jpg (http://s459.photobucket.com/user/Magnageek/media/DSCN1390_zpse381be2a.jpg.html)

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M-Cameron
May 3, 2013, 10:48 PM
oil it, then open and close each blade a bunch.....should loosen up a good amount.

SleazyRider
May 3, 2013, 10:51 PM
oil it, then open and close each blade a bunch.....should loosen up a good amount.
Tried that. Over and over, and then some. Didn't do a thing. It's been like this since new, and I'm quite certain it's riveted together too tightly.

Thanks for the suggestion!

Devonai
May 3, 2013, 11:35 PM
I'm with Cameron. A drop of oil and a lot of working it might help.

JohnKSa
May 4, 2013, 12:27 AM
Clean the joint thoroughly with either hot soap & water or a good solvent.

Once it's clean and the knife is dry, oil it with Buck's White Lightning Lube. If you can't find that, go to the Bicycle department in Wal-Mart and get some of their White Lightning chain lube--it's identical.

If you can't find either one, go to a Lowe's and buy some of their Teflon Chain Lube. It's a very similar product to the other two.

I'd try that before doing anything requiring taking the knife apart.

Piraticalbob
May 4, 2013, 07:21 AM
If lubricants won't loosen it up, insert the knife into a vise (between two pieces of wood so as to not mar the scales) so that 1/3 of the knife sticks out of the end (blades closed). Insert a screwdriver into the gap between the scales at the end where the blade pivots and very gently exert pressure to pry the scales apart slightly. Remove the knife from the vise and test to see if the blades have loosened up; repeat as necessary. Very little pressure is required, it's not like prying up a board.

bikerdoc
May 4, 2013, 09:13 AM
chain lube works well, If you you have to go to pry route like Bob said easy does it gentle pressure. You only need less than a fraction of a mm of loosening.

Certaindeaf
May 4, 2013, 10:32 AM
I think it's simply oversprung and or the cam geometry is wonky.

hso
May 5, 2013, 10:02 PM
If lube doesn't work try the old "Pearl Drops" trick. It is mildly abrasive, liquid, easily rinsed out and can smooth out the mechanism by gently accelerating wear. As an alternative, the glass range top polishs may be used. Be sure to leave some difficulting in opening so that you can lubricate following a good cleaning.

Deltaboy
May 11, 2013, 02:22 PM
Soft scrub will do it and it should not take long. :)

valkyrie.rider
May 14, 2013, 10:42 AM
I have actually used a tiny file on the high spots. Seems to speed up the process

DNS
May 14, 2013, 11:38 PM
I'm curios about the Pearl Drops thing.
Is this a product or something you home brew?

Certaindeaf
May 15, 2013, 11:44 AM
It's tooth paste/polish.. a mild abrasive.

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