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Thread: Railrod spike knife

  1. #21
    Boolit Master
    Join Date
    Mar 2005
    Hodgenville, KY-Lincolns Birthplace
    Quote Originally Posted by jmort View Post
    I got one from a member here
    I do not know the Rockwell hardness, but I did get it sharp.
    I like it, but it is more of a display piece for me.
    That member also made the anvils, varied sizes, from old track.
    Have a small, about 5 inch long, anvil out of old track.
    Ideal for tapping on small internal firearms parts.

  2. #22
    Boolit Grand Master

    jmort's Avatar
    Join Date
    Jan 2011
    Color Me Gone
    I have one or two of his anvils as well. Very handy.
    "Had his shooting been as good as his running, he might have given a better account of himself."
    James. C. Henderson

  3. #23
    Boolit Grand Master

    Wayne Smith's Avatar
    Join Date
    Mar 2005
    Hampton Roads, Virginia
    Quote Originally Posted by webfoot10 View Post
    Once you get these railroad spike knives nice an sharp, Just reheat them to a bright cherry red, then dip them into a can full of
    food grade bone meal. The heat from the blade will suck in the carbon from the burnt bone meal. You may have to do it in two
    or three heats. When cool, clean off any scale and polish the blade. Then reheat to a cherry red and quench in oil. Just quench
    the edge of the blade about 1/2 the way up the blade, Do Not quench the whole blade. Just keep the edge in the quenching oil
    till the blade cools down. This way the edge is hard and a file should not cut it, But the back is soft and will give with any twisting
    force. All your doing is caseharding the cutting edge. If the file grabs the cutting edge you will have to redo the bonemeal soak
    and retemper. I got this trick from a old blacksmith in PA 40 years ago. Hope you can use the information.
    Would finely ground charcoal work?
    Wayne the Shrink

    There is no 'right' that requires me to work for you or you to work for me!

  4. #24
    Boolit Buddy
    Join Date
    Dec 2005
    Wayne: The charcoal powder might work as it pure carbon. I've never used it , but give it a try, as it can't hurt anything.
    I only used the foodgrade bone meal as I had a gallon can of it. The bonemeal that is used as fertilizer will work too.

  5. #25
    Boolit Grand Master

    Join Date
    Mar 2013
    Northwest Ohio
    The old mix for pack hardening ( case hardening) was bone charcoal and leather. this was packed in a container and heated to temp then container and all was quenched. The packs burning or smoldering kept oxygen out so very little scale formed when done right. For knifes to case harden a length of pipe with 2 caps and a small hole drilled in the caps. screw on cap on fill with the mix push blade in fill full and cap snugly. Heat to temp and soak for while then quench in oil or water depending on material. This process makes a mess when quenched as the vents let guench into the mix making a muddy slop.

  6. #26
    Boolit Master
    fiberoptik's Avatar
    Join Date
    May 2005
    Was Mid-Michigan, 2 Orlando, 2 Jacksonville, Fl.
    Quote Originally Posted by nagantguy View Post
    Interesting topic ; as someone mentioned above my beloved horse shoe knives are.stone cold during a MI deer season.
    Thatís why we use warmer handled knives in winter!

    Sent from my iPhone using Tapatalk

  7. #27
    Boolit Buddy pacomdiver's Avatar
    Join Date
    Nov 2012
    eastern PA
    i have one that i made when my buddy still had a forge back in the late 90s, looks like the one nyfirefighter posted, even with the twisted handle

  8. #28

    Join Date
    Jul 2013
    The Pacific NorthWet
    Casenite/Kasenit (sodium ferrocyanide) might do as well for case hardening. Only case hardens the outer what, 5-10 mils though? Tho I would think the bone meal etc. do about the same. No machinist but know some things

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check