FYI - 1/4 Brass Corby's from Tru-Grit

Jack O'Neill

Jack O'Neill

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Just a heads up folks , I had purchased some 1/4" brass corby bolts from tru-grit back in April 2022, just recently used a couple to find out that the head on the female side had been drill in about 1/2of the way , my guess when the maker drilled the shaft to thread it they went to deep and drilled into the head . I talked to tru-grit today and they said their whole batch was of 1/4' brass was bad this way . So since from April of last year until now they are that way .

Unless you seat the head deep into your handle material ( the female side ) you risk grinding into the hole . I would suggest measuring the bolt and finding where the hole depth is on the head before setting .

Just thought this may help some folks to not end up with the surprise I did when sanding down the handle .
 
I had issues a few years ago with the trugrit Corbys as the shaft diameter on the male Corby was designed in a way that it was pretty easy to snap them when tightening. Don't know if they changed design but I found a different source that are better quality.

Must say I miss the days when Pop's made his own Corbys and sold them cheap.
 
Stacy E. Apelt - Bladesmith said:
Is Tru-grit taking them back and either refunding or replacing with proper ones?
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I 1st contacted them on December 28 with the issue and they said they would replace them . They received the bad ones that I sent back on January 3rd. I never heard a word from them so I called again on January 13th and was told the whole batch they had was bad and they would refund me and I asked for them to send me some S.S. corby's instead . We shall see , they don't seem to be the best in communication .
 
Seedy Lot said:
Must say I miss the days when Pop's made his own Corbys and sold them cheap.
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I made a pretty big order a few yrs back when there were such a good price - but it wasn't large enough order - I'm already running out. The new folks are doing good with Pop's, but I miss Pop and his wife. Nice folks to deal with, and to meet in person with.
 
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Don't know if ya can see it in this pic or not. Had that happen on this knife I was making for a guy in Alaska. This was years ago and I don't remember where the bolts were from. Drilled out that hole just enough to stick a mosaic pin in it. Course did it to both bolts on both sides. Glued that pin in and ground everything flush. Worked great and this knife has SEEN some use and still going strong.
 
People need to check the ones they have. The shop making them is probably a source for other suppliers as well.
 
Anyone know how to find the specs for corby bolt depths? I’ve looked around and not been able to find info on the head thicknesses. I avoid them for this reason. Always find myself puckering when I grind the heads 😁
 
Its only happened once on a thin handle and I was able to put a pin in it. Now I use Loveless bolts when possible to avoid that issue.
I threw away the other corbys in the batch after checking another and it had the same thin head surface before a hole. It wasnt brass, no idea where I got it.
 
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SBuzek said:
I just measure each one, stick a paperclip into the hole and compare to the bolt. No sweat.
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Thanks sir. Was just hoping for some specs … it’s the engineer in me!
 
The hole should be just a tad deeper than the male part length. The hole should only go just a little past the shoulder.
Take a male bolt and mark a piece of brass rod with a sharpie just past the end. Stick it in the female hole. If it goes a lot farther than the sharpie line, the hole is going too far up the wider head and can easily be ground into.
 
This is interesting I got some from USA Knife Maker and blew thru the heads. I assumed that I had measured wrong but now I'm wondering going to check them when I get home.
 
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