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Forums10
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Mar 29th, 2024
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Joined: Jan 2002
Posts: 13,145 Likes: 1145
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 13,145 Likes: 1145 |
Thanks, Kutter. That's good info.
keith, I have a kiln, bone charcoal, a crucible, etc. but if it can be done with Kasenit so that it will last for occasional usage, I'd rather go that route. The gun honestly doesn't get shot much at all. If I ever find the hammergun of my dreams, and I think I will, this one will move on down the road. It's won some hammer gun events, but it has no soul.
SRH
May God bless America and those who defend her.
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Joined: Jan 2013
Posts: 1,122 Likes: 192
Sidelock
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Sidelock
Joined: Jan 2013
Posts: 1,122 Likes: 192 |
Sometimes I feel that starting out in Engineering not long after the end of WW2 here in Brit land did give an insight into that Brit mind set of “make do and mend.” For a long time every day engineering consumables where not available so substitutes where quickly found. Now I am not saying that the substitutes where as good as the real thing but they did come in as a good second. From the now very tatty paged note book I kept with all those little snippets of information so from the page containing such useless information now but back then priceless, how to use Tin Lead soft solder and a soldering Iron to solder connections to Aluminium.
Dipping case hardening Powder all ingredients are by volume.
8 parts of coal dust
5 parts of powdered Carbon/Charcoal
5 parts of powdered sugar.
From my notes, the sugar and coal dust make a crust on the hot metal keeping the mixture in contact.
I have never used this formula because Kasenit was always available though over here in our damp climate the bottoms of the tins always seem to rust out with regular monotony, so my Kasenit lives in an 8 oz. Coffee jar.
The only lessons in my life I truly did learn from where the ones I paid for!
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Joined: Dec 2001
Posts: 6,991 Likes: 402
Sidelock
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OP
Sidelock
Joined: Dec 2001
Posts: 6,991 Likes: 402 |
The key to correctly hardening your sear Stan is to identify what type of steel you have. Try bringing it up to cherry red and quenching in oil, if it becomes hard you have high carbon steel and need to temper it. Most sears on good quality guns are made of high carbon. If you use Kasenit or another method of pack hardening on high carbon steel you will through harden it and it will be very brittle and chipping or even breaking the sear tip is a likely outcome. Surface hardening compounds are for use on low carbon steel which impart a hard outer skin while leaving the inner core ductile. Hope that helps.
Steve
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Joined: Aug 2013
Posts: 388 Likes: 1
Sidelock
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Sidelock
Joined: Aug 2013
Posts: 388 Likes: 1 |
Sometimes I feel that starting out in Engineering not long after the end of WW2 here in Brit land did give an insight into that Brit mind set of “make do and mend.” For a long time every day engineering consumables where not available so substitutes where quickly found. Now I am not saying that the substitutes where as good as the real thing but they did come in as a good second. From the now very tatty paged note book I kept with all those little snippets of information so from the page containing such useless information now but back then priceless, how to use Tin Lead soft solder and a soldering Iron to solder connections to Aluminium.
Dipping case hardening Powder all ingredients are by volume.
8 parts of coal dust
5 parts of powdered Carbon/Charcoal
5 parts of powdered sugar.
From my notes, the sugar and coal dust make a crust on the hot metal keeping the mixture in contact.
I have never used this formula because Kasenit was always available though over here in our damp climate the bottoms of the tins always seem to rust out with regular monotony, so my Kasenit lives in an 8 oz. Coffee jar.
I'd be interested in any of those old recipes and dodges Damascus. Working in the engineering trades myself, i find a lot of new tools, compounds, products, even down to paint have been so tampered with over the years, to appease the green brigade, that most are useless.
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Joined: Jan 2013
Posts: 1,122 Likes: 192
Sidelock
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Sidelock
Joined: Jan 2013
Posts: 1,122 Likes: 192 |
Bonny from another page
Crucible colouring case hardening compound substitute. Blood Fish and Bone garden fertilizer (people where still expected to grow what food they could, so garden chemicals where available) you mixed one to one with powdered charcoal the colour imparted on the metal was on the blue side but not too bad looking.
The only lessons in my life I truly did learn from where the ones I paid for!
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Joined: Jun 2014
Posts: 54 Likes: 12
Sidelock
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Sidelock
Joined: Jun 2014
Posts: 54 Likes: 12 |
Kasenit originally used Potassium Ferrocyanide, but I think they changed the formula before they quit making it. But any of the surface hardening compounds are just that. They are not a good substitute for the pack case hardening that can take several hours to get even 1/64" deep. There is no appreciable diffusion of carbon more than a thousandth or two deep from a quick case hardening process. There are a number of different ways to add carbon to the surface of milder steel including heating in an acetylene rich, or carburizing flame before quenching. I've made some emergency thread chasing taps or dies by putting a nut on a bolt and drilling some longitudinal holes through the thread juncture 60 or 90 degrees apart to create flutes. Then I unscrewed them and heated the nut or bolt red hot and dipped it in sugar. Then I heated it cherry red again and quenched. The sugar contains a lot of carbon, and hardens the surface enough to chase some damaged threads. Better than nothing in a pinch, but no substitute for a properly hardened tap or die made of good tool steel. I'm still hoarding my partial can of the old Kasenit too. I too have used the sugar method when I was stuck in Ulm,Germany whilst riding my 1954 Matchless motorcycle to Istanbul.The main jet was too small and I made a half round reamer out of a tent peg,,case hardened it with sugar and opened the jet out to a more acceptable size. Slightly off topic but with a vintage element to it !
As our language becomes impoverished,,our thinking shrinks to fit.
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Joined: Jan 2002
Posts: 13,145 Likes: 1145
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 13,145 Likes: 1145 |
The key to correctly hardening your sear Stan is to identify what type of steel you have. Try bringing it up to cherry red and quenching in oil, if it becomes hard you have high carbon steel and need to temper it. Most sears on good quality guns are made of high carbon. If you use Kasenit or another method of pack hardening on high carbon steel you will through harden it and it will be very brittle and chipping or even breaking the sear tip is a likely outcome. Surface hardening compounds are for use on low carbon steel which impart a hard outer skin while leaving the inner core ductile. Hope that helps.
Steve Tremendous help, Steve. Thank you very much. SRH
May God bless America and those who defend her.
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Joined: Mar 2002
Posts: 2,857 Likes: 384
Sidelock
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Sidelock
Joined: Mar 2002
Posts: 2,857 Likes: 384 |
if you use garden bone fertilizer you need to cook it in a metal tin with a small air hole in the top over a heat source.it will smell terrible ,you can use regular bbq charcoal with out the match light starter,soaked in water to break down the binder and dey i an over after drying in the sun.
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