Annealed or heat treated? ;)
Used "paper knives"? :) (pacific north west)
(never seen any, just heard about them)
.100" thick power hacksaw blade too thin for you, Good2?
They sell thicker (3mm?) metric ones in Europe but you might
have to be you're'a'peein' to get 'em? :/
BTW for you or anyone else that's interested...
David C MacDonald (in canada)
Has NOS (new old stock) CitCo M2 HSS (high speed steel)
power/mechanical hacksaw blades that are the 64-65hrc
"full hard"/"hard back" type in the larger/thicker sizes,
...he's selling them for basically "used" prices too.
.100" or .088" at 24" long and some 14" long .050".
There. Did I about cover it for the search engines? ;)
Anyway, on the brand spanking new Wilson tester at school ($10k)
the piece of CitCo blade I tested was 64.5hrc everywhere except
near the ends around the bolt/pin holes. Wanted to find a "line"
where one hardness started and one quit but ran out of time. :/
A file works pretty good tho...
formatting link
.088" thick two-tone red Simonds power hacksaw blade.
Can you see part of the old "bolt hole" there? :)
The "lug" off the end of that blade tested right at 66hrc.
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No nail mark on either side of the blade. :)
It was fixed-up for and given to, Carl in Texas.
---------------
For a fixed blade, to drill holes in the hard part, just use a
Black&Decker brand "glass'n'tile drill bit" (with the arrow head
shaped tungsten carbide tip WC) and a hand drill at high rpm and
back-up the HSS blade with mild steel. The spade-type glass and tile
bit will stop drilling when it hits the soft mild steel, otherwise
it'll break. Use a Dremel and an 1/8" solid carbide burr to modify
the drilled holes.
But first, to blank-out and also roughout-the-thin-part of the
soon-to-be-knife blade, use a little "hand" (angle) grinder,
like a 4" or 4+1/2" and a Norton-Plus type 27 wheel and Norton
cut-off wheel. A bench grinder is a second choice and/or backup
for the little hand grinder.
Don't use the cheaper 27 wheels, no matter the fancy-ass name, BTDT.
Same goes for the drill bits. :) Also, even a Norton wheel that has
the mounted 5/8-11 threads, are generally too crooked, better to go
with the plain ones (1/4" type 27's) with the 7/8" hole (or 5/8"
hole for the 4" hand-grinder) and use the flanges.
I want to see some pictures of your knives, even pictures in
progress are cool! Ok? :)
Alvin in AZ (it ain't hard to make a friggin knife)
ps- Every knife-knut and every metallurgist should have at least one
~65hrc HSS knife so he'll know what a truely "good" edge-taking
and edge-holding knife really is! :) Go for it, you can do it!
MSC has rectangular ¼" M4 bars 24" long and 1", 2", 3", or 4" in width.
Online Metals doesn't show it in their catalog, but can probably get it for
you.
Hey Alv how did you know I make knives? Anyway as per request here are
some photos of something I am working on now. I still have to drill
some weight reducing holes in the handle and finish up the polish.
[IMG]
The largest business to business company in the U.S. - Want metal, HSS cutter,
trash can.....
Martin [ long time user and stock holder ]
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder
snipped-for-privacy@yahoo.com wrote:
You were over on rec.knives? ;)
I'd ask this same question, even if this weren't the metallurgy NG...
What steel is it?
And (if it's something other than stainless steel) how hard is it?
Alvin in AZ
> Hey Alv how did you know I make knives? Anyway as per request here are
> some photos of something I am working on now. I still have to drill
> some weight reducing holes in the handle and finish up the polish.
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