05-11-2014, 10:49 PM
Yesterday, I was working on a project when I broke the handle off my QCTP wrench. The shaft was only 5/16" and of unknown steel grade. Just some handles I had picked up several years ago.
I took a 3/8" grade 8 bolt and turned down the head, then knurled about 1 1/4" of the end to make it stick into a new aluminum handle. It took several tons on the hydraulic press to ram the bolt into the handle.
One of the nice things about pinch-type knurlers is that you don't have to have as much support as you would need with a bump knurler.
I redrilled and tapped the wrench head to take the 3/8" NC bolt and the wrench was back in business, stronger than ever.
I took a 3/8" grade 8 bolt and turned down the head, then knurled about 1 1/4" of the end to make it stick into a new aluminum handle. It took several tons on the hydraulic press to ram the bolt into the handle.
One of the nice things about pinch-type knurlers is that you don't have to have as much support as you would need with a bump knurler.
I redrilled and tapped the wrench head to take the 3/8" NC bolt and the wrench was back in business, stronger than ever.
Mike
If you can't get one, make one.
Hawkeye, proud to be a member of MetalworkingFun Forum since Jan 2013.
If you can't get one, make one.
Hawkeye, proud to be a member of MetalworkingFun Forum since Jan 2013.