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Main Boards => PowWow => Topic started by: Rufus on October 23, 2007, 03:53:00 PM

Title: Cutting knife steel
Post by: Rufus on October 23, 2007, 03:53:00 PM
Seen where someone making knife blades with circular saw blades was cutting the steel with a Dremmel tool. What cutting wheel using? Mine I used just made shiny scratches.
Title: Re: Cutting knife steel
Post by: jmar595 on October 23, 2007, 03:58:00 PM
try annealing it first, it will soften it alot and make it easier to work. or you can use the large dremmel cutoff wheels, looks like they have a fiber mess in them, I used them to cut out a blade froma lawnmower blade whithout doing anything to the lawnmower blade.
Title: Re: Cutting knife steel
Post by: JEFF B on October 23, 2007, 04:26:00 PM
you can also use a plasma cutter they eat through anything.  :thumbsup:  those dremmel cut off wheels are good if ya get the big ones as jmar595 said. good luck and post some pics
Title: Re: Cutting knife steel
Post by: Rufus on October 23, 2007, 06:48:00 PM
Thanks guys. Be looking for big wheels after season over. Wished I'd thought of doing this before I retired. I had access to a really 110 volt plasma cutter that I used a lot. Maybe I can borrow. Seems big bosses can borrow tractors and such, maybe something little for me. Going to chase deer in morning. Perhaps find very, very slow one.
Title: Re: Cutting knife steel
Post by: Curtiss Cardinal on October 23, 2007, 07:11:00 PM
You have to anneal it first the the normal cutting wheel will work.
Title: Re: Cutting knife steel
Post by: hickstick on October 23, 2007, 07:50:00 PM
...and plasma cutters aren't 'the best' choice when cutting out knife blanks.  they heat the steel unbelievably hot in the area proximal to the cut.  high heat = grain growth = weakness in the steel. so unless you're cutting way "outside the lines" so to speak, then grinding to get close...I'd use the abrasive wheels.

I used to use the dremel, then upgraded to a cheap angle grinder with a 4" abrasive cutoff wheel.   then you can swap out to a griding wheel and freehand some of the profile grinding with the one tool.  

however, nearly all my knives are forged to shape so I most often hotcut.  heat the steel to red, hammer a chisel though it (cuts like a warm knife thru buttah)
Title: Re: Cutting knife steel
Post by: Straitshot on October 23, 2007, 11:38:00 PM
I always cut mine out on a band saw, but I always used annealed metal to work with and hardened the blade after shaping.
Title: Re: Cutting knife steel
Post by: Curtiss Cardinal on October 24, 2007, 01:05:00 AM
Go to youtube and search "knife making"
you see a couple good ones at least and the good ones show you how to anneal and harden after finishing the shaping and intitial sharpening and drilling any holes you need.