Corby Bolt - Need help!

DaveMartell

DaveMartell

Joined
Apr 22, 2010
Messages
235
I have a Corby bolt that is installed and sanded on a near finished handle that has been ground through to show a hole right smack in the center of the bolt! The scales were thin and I thought that it might be a good idea to shorten the threads (male and female) to sink the heads deeper but I didn't and now I'm paying for it. Lesson learned...however....is there a fix for this? Anything? Help!?
 
if you are really carefull you ight be able to with a smaller drill bit get the center of the corby out (and the heat caused by thr drilling might let you get the head out )
if it comes out clean then you can re counter sink and make a set of shorteed corbys and not loos the work of the handle
 
I've never tried to remove a damaged corby before, but you might try using a screw extractor. It should work and if your careful, you might get it out without damaging the handle material.
 
Thanks guys, some good idea here. I'm most inspired by the EZ-out option except for I'm pretty sure I've got epoxy in the threads. This really sucks.
 
dave the trick is gettign the corby at a temp of 240-300 but not over so that the epoxy gives up bt the wood is not scorched

if a soddering iron is how you get your temp then so be it i have alwayse jsut used a dril bit andn ler it "grab" the head that was part drilled out

BTW drill the screw part ot firrst and then warm and push out the bolt side
 
I did the same thing years ago with a brass Corby. I just took a brass rod, cut off a small length, and pounded it into the hole like a rivet. Brass is soft enough to completely expand into the hole and sand off nicelely. Still looks fine 15 years later (a knife I gave my youngest boy). A stainless Corby may not work as well. Just an alternative.
 
It's nickel silver. :(

I have been thinking, and maybe I'm nuts here, about dropping some silver solder into the hole and grinding it flush. I'm thinking of using a solder gun for heating just the bolt. I'm wondering if it will match and if it will stay put.
 
I wonder if you couldn't do what Lloyd said. If the screw slot is already ground off, use a dremel cutting wheel or something to cut a slot on both ends. Then heat it up just enough to weaken the epoxy, and try to unscrew it.
 
Follow up>

I had Llyod "Butch" Harner and Mr. Deker stop over the night before Ashoken and while here they gave me advise on dealing with this problem. Essentially I did pretty much exactly as what you (and they) said and that was to drill out the damaged bolt and replacing it with a new one.

A couple of key things to note (for those of you who may find yourself in this position) is that the hole in the bolt makes for an easy centering mark to drill into (as Butch pointed out to me).

I used a 1/8" bit and it took out the center of the bolt and the other side pushed right out without damaging the scale.

I do think that if I should have to do this again I'll drill and use an EZE-out to back the screw out a little more gently or at least I'll try anyway.

On the replacement bolt I found that I needed to drill the stepped hole a little deeper to sink the bolt into the scale more as well as shorten the threads (both male and female) so that the bolt would tighten.

In the end it worked out great. Thanks everyone for your help! :thumbup:

Dave
 
Glad it worked out for you, Dave.

Now you know that it is easy to sharpen a knife compared to making one.:D:D:D
 
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