more on making serrations

J

james boyer

Joined
Sep 10, 1999
Messages
72
If i am going to do the serrations, by hand with a file, is there any way i can do some before heat treating. How much should i leave so that it wont warp, or should i strictly do after heat treat.
thanks
 
James,
All of the serrations that i have done were filed into the blade before heat treat. These were all air hardening steels (440C, ATS-34,
D2). I took them down fairly thin. After heat
treating i cleaned them up with sandpaper wrapped around the same file.

Filing after heat treating is going to be difficult and time consuming. Especially if the steel is as hard as ATS-34 at 59-60 Rc.

My recommendation is for you to file before you heat treat.
 
I have put serrations of several production knives with my Dremel. I use the 1/2" sanding drums, I think they are 60 grit or so. Next time around I will alternate between 1/2" ans 1/4" drums. They work really well, even on hardened material. I have even done some filework on hardened knives with a dremel.

YeK
 
Yek,
I have thought about trying to do the same thing with my dremel. Are you using the edge of the sanding drum to make a triangular cut or are you making a round cut?
 
I am making round serrations mostly. I have been thinking of experimenting with a cut off wheel to make smaller serrations. Personally I like them as large as possible. My last knife use just the 1/2" drum, but I alternated the deppth of the grind, so it looks like a bread knife on crack.BUT it does not get clogged with gunk when slicing fibrous stuff. Also does wonders with Bagels..
smile.gif
..


YeK
 
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