How To Knock out Thumbstud out of Knockout

C

CyberDog

Joined
Jul 4, 2018
Messages
40
Hi,

I want to remove thumbstud in my Kershaw knockout. I am looking for suggestion how to do this.

There is already one thread about it (https://www.bladeforums.com/threads/kershaw-knockout-thumbstud.1019178), so we have some information to work with.

"you could punch it out, as it's press fit in"

o7KVN5C.jpg


So I could hammer thumbstud out? I don't want to damage the knife!! My blade is M390.
I would disassemble the knife first ofc and work on blade.
I could try too cool down thumbstud with ice, that could shrink it slightly and make hammering easier?
Another method would be drilling through thumbstud and then getting it out.
Do you think they used any glue to fix it or is it just press fit in?
Any tips or suggestions?
 
I've used a drill press (off)... first I drilled a hole in a piece of wood, used that as the platform for the knife with the thumbstud in the hole... then put a drill bit in the press backwards, and pushed the thumbstud right out. (Did the same thing to push it back in).
 
CyberDog said:
Thanks for info! Why did you put it back in?
Click to expand...

I've removed some to clean up some damaged knives... so put them back in when done. (It wasn't on the particular knife you asked about btw... but on other Kershaw models with a "press fit" thumbstud).
 
A guy here used a small press. I forget his name here. He posted the pictures on his Instagram. He transplanted them into a zt 0562cf iirc.
 
Sounds weird that he put that in ZT. Still interesting. So it seems that it isn't that hard to knock out thumbstud, glad to know.
I was also thinking if this hole would become weak point of the knife, but as I see that many other knives, like We Rectifier, have similar holes, I guess it won't be a problem unless I abuse the knife.
I am also thinking of maybe filling up the whole with something, maybe polyester resin in blue color, since my knife handle is also blue.
Edit: I will probably go with epoxy, tho polyurethane may be even better. Just have to research which would be best.


WE-Knife-Co-Rectifier-FL-Black-G-10-SW-803F-BHQ-83814-jr-large.jpg

JoI3WXQ.jpg
 
Last edited:
Thank you!
Now I have a spyderco knockout. Need to figure out what I should fill that hole with. A little artistic customization

hkLexPf.jpg
 
Thank you cyberdog for this thread. I have always liked the looks of the Knockout and like that it is made in the USA. However, the thumbstud looks too large, redundant, and out of place to me. Now that I know I can easily remove the thumbstud (I don't know why I didn't even think of doing it before), and what it actually looks like with the thumbstud removed, I will have to pick on up to give it a try. You made a great choice with the BLUE one too- definitely my favorite color version!
 
Knife feels much better without thumbstud, it carries in pocket much nicer too.
I am no metallurgy expert but I'm pretty sure this hole is weak spot of this knife now. If I ever drop it on hard ground, there is good chance it may crack around the hole.
I will have to do something about it. But I'm definitely not putting thumbstud back in.
 
That small of a hole should not make the blade weaker. If Spyderco made the knife the hole would be many times larger the the one in your knife. The material other then steel you mentioned would not add any strength to that area of the blade. In most material including steel that has a crack you drill a hole at the end of the crack to stop it from getting larger. I would not worry about the strength of the blade but just the aesthetics.
 
I'm creating a zombie thread, but this was the first place google pointed me.
For what it's worth, I tried to push mine out using a medium sized drill press like cbwx34 mentioned, and it didn't budge. So I took an idea from another internet source I can no longer find and placed a nut (5/8" size maybe?) over the show side thumbstud with some masking tape under it to protect the black coated blade, then put the whole thing in a bench vice and clamped down. The jaws pressed directly on the lockbar side stud and pushed it out into the hollow threaded portion of the nut on the other side. It pressed out easily. I did have to take it all loose and add a 2nd nut to the first to completely push the stud out. Those are long studs. Knife is much more attractive and functional now without those huge studs. Makes me want to push the ones out of my leek too, but they act as the blade stop.....
 
Many creative people here. Glade it work out for you. A vice is many times more powerful then any drill press.
Ron
 
greyling said:
I'm creating a zombie thread, but this was the first place google pointed me.
For what it's worth, I tried to push mine out using a medium sized drill press like cbwx34 mentioned, and it didn't budge. So I took an idea from another internet source I can no longer find and placed a nut (5/8" size maybe?) over the show side thumbstud with some masking tape under it to protect the black coated blade, then put the whole thing in a bench vice and clamped down. The jaws pressed directly on the lockbar side stud and pushed it out into the hollow threaded portion of the nut on the other side. It pressed out easily. I did have to take it all loose and add a 2nd nut to the first to completely push the stud out. Those are long studs. Knife is much more attractive and functional now without those huge studs. Makes me want to push the ones out of my leek too, but they act as the blade stop.....
Click to expand...
Wow, just tried the bench vice/taped blade/nut on show-side method, and it took about 5 seconds; SWEET!
Thanks!
 
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