1095 and some Ebony

T

TnTom

Joined
Jul 29, 2014
Messages
16
I did this one for my Dad a couple of years ago. Its hammered from some 1095 then finished with a drawfiling process. The pin holes were while hot in the forge punched and the pins turned from an old brass cleaning rod. After heat treat it was tempered and cyro'd. The Ebony was a first for me and the hardest dang stuff iv ever tried to work. Actually sparked.
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My wife stitched me up a nice little bag . The draw filing took about 2 hours a night for what seemed like a month or so then hand polished and finished with some diamond compound. Its one of my favorites. I drew up my templates on Acad then blued the piece and started filing. My goal was to use no power tools, but I did use a drill press to put the pin holes in the Ebony scales.
 
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Really nicely done! Excellent work.

Some comments:
Cryo is done on complex steels with RA issues, mostly stainless steels and high alloy tool steels. It will do nothing on 1095.
When it is done, it is part of the quench ( actually, it is the bottom end of the quench - Mf). The steel is quenched ( usually air or plate quench for these type steels) and then cooled to room temp. It is then placed in the liquid nitrogen for a while and warmed back up to room temperature and then tempered two times. I some cases a shrot "snap temper" is done at 200-300F for about 30 minutes to prevent cracking in the cryo.

A small 1/8" wide facet around the butt end would look and feel better. This is easily done with a file and sandpaper.

Ebony is tough stuff, but will not make a spark. If you were getting sparks, you are grinding it too hot, and that may lead to checking and cracking in a few months. Grit from the grinder gets pressed into the wood and then sparks as it gets pulled out on the next pass. The important things about grinding ebony on a grinder is slow speed ( if possible), fresh belts, and cleaning the belt often. Use a rubber belt stick to clean it.

I can't see any sort of liner in that case your wife stitched. If you don't have one, make or buy one to protect the owner as well as the knife tip. Kitchen stores sell them in assorted sizes, or one can be make from leather, or kydex.
 
bladsmth said:
Really nicely done! Excellent work.

Some comments:
Cryo is done on complex steels with RA issues, mostly stainless steels and high alloy tool steels. It will do nothing on 1095.
When it is done, it is part of the quench ( actually, it is the bottom end of the quench - Mf). The steel is quenched ( usually air or plate quench for these type steels) and then cooled to room temp. It is then placed in the liquid nitrogen for a while and warmed back up to room temperature and then tempered two times. I some cases a shrot "snap temper" is done at 200-300F for about 30 minutes to prevent cracking in the cryo.

A small 1/8" wide facet around the butt end would look and feel better. This is easily done with a file and sandpaper.

Ebony is tough stuff, but will not make a spark. If you were getting sparks, you are grinding it too hot, and that may lead to checking and cracking in a few months. Grit from the grinder gets pressed into the wood and then sparks as it gets pulled out on the next pass. The important things about grinding ebony on a grinder is slow speed ( if possible), fresh belts, and cleaning the belt often. Use a rubber belt stick to clean it.

I can't see any sort of liner in that case your wife stitched. If you don't have one, make or buy one to protect the owner as well as the knife tip. Kitchen stores sell them in assorted sizes, or one can be make from leather, or kydex.
Click to expand...

I know barrel makers use the process a lot. The company that did the heat treating works only with knives and I was surprised when he return it to me providing me with all the specs. Cyro has its place for some folks. I wouldn't have paid extra for the process. The spark (singular) came from the chop saw carbide blade when I was cutting off the blank I would use a blade with more teeth next time from the stock. The bag is lined with suede with a piece of leather at the tip.
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[/URL][/IMG] I have a second with a little different handle shape thats still wip.
 
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