Grinding A Serpentine Blade
Posted 09 November 2010 - 03:31 PM
My name is Ed, I am from Carroll County, Md., and I am relatively new to the ABS and knife-making. It's great to "meet" you all! My question is this: What is the best way to grind serpentine style blade bevels? I have a blade that I was "Free-forging" (no template or plans)and I forged it pretty close to final shape, including the bevels. When it came time to grind and refine the bevels, I realized it wasn't such an easy task. I am using limited tools as I am new to the craft, and I only have a 2"x42" belt grinder with a flat platten or slack belt option, as well as a 4-1/2" hand held grinder. Should I use files? What is the best way to get the grind even on both sides? Any help or info anyone can provide would be great...
Posted 10 November 2010 - 10:15 AM
Posted 10 November 2010 - 03:58 PM
Thanks for replying. It's definitely not a Kris blade. Maybe it doesn't even qualify as a serpentine blade, more of just a recurved. Please check out the attached photo. It's the recurve area that's stumping me. My grinding belts are 2" wide but the recurved area has a much smaller radius. The recurved section is about 3.5" long, and the over-all length of the blade including ricasso is about 8". This isn't even very good steel, I was just practicing forging on some "free" steel in an attempt to learn more, and it looks like I am going to learn more! Any recommendations would be greatly appreciated. Thanks for the help!
Posted 10 November 2010 - 07:35 PM
A recurve is not flat. It's just not. So, no matter what, you are going to have to eyeball it to some degree. This will take some draw filing most likely. I do it all the time. I have discovered that recurves require you to think a little diferent to get it "straight". There is really not much that is technically straight about them, but you know what I mean. Even from side to side with no flats spots or abruptness about it.
As for recommendations. I recommend you get good at making straight blades first. I sincerely believe this would be the best for anyone who is learning to grind. That way you can take full advantage of the flat platten. Lin
Posted 11 November 2010 - 06:18 PM
Thanks for the great advice. I will focus on getting very good at making straight blades for a while...I kind of came to that conclusion myself once I started working on that recurve! Talk to you soon, and thanks again for the help!
Posted 11 November 2010 - 08:35 PM
Anvil Top Custom Knives
Posted 13 November 2010 - 05:00 PM
Very nice to "meet" you. Thanks for your advice. I am very greatful to be included in this forum. I can see it is going to be a great asset to me, and I hope that I can one day return the favor. I am getting some 1084 specifically to start "knocking out" some straight blades and focus on the basics for a while. Thnaks again, and I hope to talk to you again soon!