Advice on making serrated edge

Fish30114

Fish30114

Joined
Jan 5, 2014
Messages
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I recently got a request for a Bread knife, and I have to admit in all these years, I've not made a serrated edge blade, so I am asking for advice on how to make a serrated edge, and also how to sharpen one.
I would appreciate any info/advice

Thanks--Don
 
I’ve thought about using a checkering file on the edge before sanding final geometry, but have never tried it. You could probably use some needle files too.
 
Use the Custom Search Engine nand search "making a serrated edge". You will find lots of threads where I and others tell how to do it with a chain saw file and a round brass rod.
 
Depending on the size and shape you want them to be, you can also grind them in horizontally on a small wheel attachment. The 1/4" "wheel" might work nicely. I've seen larger serrations ground this way and have also played around with it myself in the past on some bin knives.

Or you can also use a small drum sander on a dremel if you have a decent amount of sanding sleeves to use.

Edit to add: Check out "Veff serrations" for a few examples of the serration type I'm talking about.

~Paul
My Youtube Channel
... (Just some older videos of some knives I've made in the past)

 
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ok this will sound Crazy but try putting a couple of o rings on your wheel, place the belt on the wheel and cut. this gives you a method of stepping the serrations over to the next set in the blade you are making. there are very expensive/labor involved ways of doing this but sometimes Simple just works..
 
Backyard said:
Chainsaw file
Click to expand...
+ one rod in same size + file jig and job is done in 15 minutes ............
b9fNjAs.png
 
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I wonder if you could file in small serrations with a checkering file. The kind a lot of makers use for jimping. Like a 20LPI file. Maybe even a 30 or 40 LPI(lines per inch) file. I wonder if it could make tiny little serrations like Spyderco does.

You’d need to have the bevels ground first probably. It would be awesome if they made a super hard checkering file that would allow cutting the little serrations in after heat treat...
 
I use checkering files from time to time for some tasks, but don't think it would work here. Using one on a hardened blade would quickly ruin a $40-50 file. I think the pattern would be too fine, anyway.

While thinking about this, I had a thought ( dangerous situation). I haven't tried it but might just for fun. I thought of the possibility of making a 1/2" or 3/4' wide belt in 100 grit ceramic (slit a 1" belt in half) . Put it on the grinder at medium speed and using a piece of .050" carbide and some sort of clamped guide, wear away the grit in a thin .050" line. Repeat about .050" away, etc. You will create a belt that cuts grooves. Use it on the hardened blade once the bevel is ground to a sharp edge. Hopefully, this will serrate it.

OK, this made me think of an alternative to the expensive diamond wheel. Buy a box of 1.25"abrasive cut- off discs. Assemble five or six on a mandrel with 1" cut-off discs between them as spacer washers. Use this to cut the serrations in the pre-HT blade, and clean it up after HT. The ones I use at work are Dedeco 1.25X.032" and come in a box of 100 for $35. I would think that chucking the mandrel in a lathe would be best.
 
Here is an example of what I was talking about, and where I originally got the idea to try it from:


I believe Mick is using a 5/8" wheel in the video, so you could even use all the way down to a 1/4" wheel if you wanted to go smaller.

Just one other way of going about it.


~Paul
My Youtube Channel
... (Just some older videos of some knives I've made in the past)
 
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I do that on things like bread knives, and occasionally on a camp knife. I think most folks call that a scalloped edge, not a serrated edge. It does get wicked sharp and is easily touched up after HT or done completely after HT. Re-sharpening is also pretty easy.
 
coldsteelburns said:
Here is an example of what I was talking about, and where I originally got the idea to try it from:


I believe Mick is using a 5/8" wheel in the video, so you could even use all the way down to a 1/4" wheel if you wanted to go smaller.

Just one other way of going about it.


~Paul
My Youtube Channel
... (Just some older videos of some knives I've made in the past)
Click to expand...

That’s a cool idea! Thanks for sharing it.
 
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