[TheForge] Re: File Making

[Larry Brown]

Thanks for the information in the post, I always try to stay away from the 
fumes as it stinks, but the cyanide information is really good to be aware 
of. Don't use it much, got the can 2nd hand and have had it 20+ yrs.
Larry Brown


At 05:25 PM 3/19/2008 -0700, you wrote:
>Kasenit when properly applied (work in a container filled so that the
>kasenit covers the work on all sides) and heated to 1650 F hardens to
>a depth of .005" in 15 min.
>
>A quick dip in the powder and a few minutes back in the fire results
>in a case depth of probably less than .001" this is not going to work
>for a file.
>
>Kasenit is potassium ferrocyanide K4-Fe-(CN6)  and sodium ferrocyanide
>C6-Fe-N6-Na4 . Lots of carbon and nitrogen available to harden the
>steel and the potassium and sodium act to accelerate the process.
>
>BTW  It is touted as a safe non poisonous product but don't allow it
>to come into contact with any acid or you will get hydrogen cyanide
>gas and you don't want to be around when that happens.
>
>
>James Binnion
>jbin at well.com