That's the first thing that I thought of. Get a piece of flat aluminum, lay out lines and practice until you get the hang of it, then show us how it turned out. I've thought of doing this on a thumb ramp or two.Evil D wrote:What you want is called a "checkering file".
Here’s a checkering job that was done some time in the past 52 years; it’s probably not as crisp looking now. The friend that did it laid out the lines on a piece of pipe and practiced on the pipe to get warmed up. He used a checkering file and a triangular file. You really want serrations, not checkering, so there wouldn’t be as many steps. Really, serrations are only uni-directional checkering, right? Why couldn’t one do checkering on the lock bar/back of the handle?Bolster wrote: Hm, OK, thanks. I've done diamond checkering on wood, but don't have a checkering file for metal. If it's a similar process, the issue is getting the lines started. I'll look into it. Hadn't considered doing the job by hand, but if it works, great! Thanks for the lead.
According to Brownells, a checkering file is really only for laying out lines; the actual creating of "peaks" is done with a triangle file. I would imagine a mill could also lay out lines, being that it's accurate to .001.
I had not considered jimping on the thumb ramp of the blade's spine (much as I would like it) because I assumed the blade would be way too hard for any file. It is after all ZDP189. Has anyone successfully filed jimping onto a post-production, hardened blade spine? Brownells says: "Use of these files ...on hardened surfaces will ruin the teeth - dulling them almost immediately."
Is the lockbar hardened?
Xplorer wrote: ↑Sun Nov 22, 2020 9:57 amBy far the easiest way to do it is to lock up the knife in a mill vise and choose the carbide end mill that matches your width and shape requirements. But, I'm guessing if you had a mill in the garage you might not have asked..so diamond files are an inexpensive way to get the job done. Here's the result of a ball-end mill cutting jimping through G10 and a hardened blade.
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