Kevin Cashen's ABS heat treatment video has a good explanation on interrupted quenching.
@luciusirving5926
2 жыл бұрын
I brine quench my cold chisels from rebar and are currently capable of chopping concrete. It's all about HTing not the alloy. Brine can even make 4130 hard like high carbon steel if it has enough soap and salt in the mix.
@shamilton5864
7 жыл бұрын
I have made a couple knives so far. I used O1 tool steel and quenched in canola oil. How often should I change out the oil?? One and done, or is the oil good for several knives?
@wmcutlery54
2 жыл бұрын
I use olive oil for quenching my blades and it works very well
@beerhunter272
6 жыл бұрын
Hey there. I recently cut and drilled a holed into an old file to be used as a flint striker. Now I cut two other pieces and did not over heat them and they work great as flint strikers, but when I heat treated the 3rd piece, it will not create sparks. It is hard. It is very difficult to get any filings when trying to file it. The file just skips across it, but it will not create sparks. Now I used new ATF oil to quench, does that have something to do with it? I'd appreciate any experienced feedback. Thanks.
@jacobflocker9278
7 жыл бұрын
Great video was wondering if in the future you could do a video on your forge and set up I'm have problems getting mine up to forging temp would like to see what a pros looks like thanks
@FargoFX
7 жыл бұрын
Thanks, this comes at the perfect time for me, just starting to use O1 and looking for all the info I can get.
@tylerkrug7719
3 жыл бұрын
Dam this is a cool channel!
@josephconnelly7124
4 жыл бұрын
As always, great info. Thanks Walter
@tylerkrug7719
3 жыл бұрын
Great info as always! Thank you!
@Famo59
7 жыл бұрын
Hi Walter.. Thanks for sharing your knowledge.. Cheers Tony 👍🍺⛏🇦🇺
@francesmendenhall189
Жыл бұрын
My bladesmith pla quenches the edge, then when the edge is black he turns it over and cools the back. He is careful to keep the back below the critical temp so it doesn't harden.
@drrickstudwell
7 жыл бұрын
Love these videos Walter! Please keep them coming. Thinking of becoming a Patreon. Lots of info, thanks.
@NikoMoraKamu
7 жыл бұрын
i use olive oil to quench, smells good , safe to eat and is transparent
@jackdawg4579
7 жыл бұрын
We have furnaces at work that we can feed in carbon dioxide to ensure an oxygen free atmosphere for testing, but they get no where near hot enough for quenching, 6 -700 degrees celcius is about their limit. One could try tempering in it, but I generally get no scale when tempering normally, so not really worth the effort. I find getting my coke fire nice and hot, then shutting off the air before dropping the steel in to heat it for quenching gives me good results with minimising scale.
@Wik3dNuTS4k
7 жыл бұрын
Off topic but what materials can be used when making a habaki, i dont have brass or copper and was wondering if stuff like aluminium or even pieces of metal roofing sheets
@bumstudios8817
7 жыл бұрын
a lot of good questions and answers!
@hernancoronel
7 жыл бұрын
Hi really nice videos Walter! Thanks!
@jettaphillips5023
6 жыл бұрын
I was watching Jay fisher on heat treating and he said that 440c needs to go down to -350 c and soak for 60 hours to get full hardness is there discernible difference in normal us of the knife?
@coalsauce4457
7 жыл бұрын
I accidentally bought some marine grade industrial epoxy is it OK to be used for a kitchen knife or is industrial stuff especially toxic?
@othername1000
7 жыл бұрын
Nothing on stainless steel tool wrap site about marker/scribes
@jesusrenemedinasanchez689
7 жыл бұрын
great video walter
@sethkleinhanenveld6930
7 жыл бұрын
Nice video again! One question that I have is how many times can I use the same oil to quinche . Does it wear out?
@polishavenger1
7 жыл бұрын
Depends upon the oil, Seth. Vegetable oils/nut oils go rancid and are unstable....they do not last very long. Purpose-made quenchants have stabilizers that allow LONG lives.
@johnknieff7247
6 жыл бұрын
Seth Klein Hanenveld uuy
@Feralhyena
7 жыл бұрын
Hey Walter, have you ever considered using an aerated sand bath for heat treatment? I saw a video on youtube a few weeks back and it looked like a good middle ground between treating in a forge and buying a dedicated heat treat oven. I ask because I'm wanting to get into file-cutting and it also looks like a good alternative to the salt baths used by commercial file-makers.
@MHN1945
7 жыл бұрын
Your videos are great and really informative. is there a video about handling CPM 3V steel and if not, could you make one?
@Wylder955
7 жыл бұрын
Thanks to you i attempted to make a knife and say attempted because i failed at the very end i might say. I tried to make a tanto chopper out of a old file i made a good design full tang started working by softening the file and did all the work by hand with another file and a hack saw ( wanted a paracord handle so no drilling ) made it smooth hacked off the end made it to look like a american tanto filed away made bevels the thing was in tip top shape heated it up to non magnetic quenched it in oil and it still manged to get a nasty curve near the tip and that's where i screwed up while trying to make it straight i snapped 2.5 inch off the tip. Besides the screw up at the end i manged to get it hard and the interesting part is i enjoyed the work i'd spend a few hours here and there and didn't even notice the time pass. In a month or two i'm going to attempt to make the same knife again and remember not to be so rough while trying to straighten it out :) If i succeed i will send you a photo of the finished knife.
@Wylder955
7 жыл бұрын
I will try again the experience was not disappointing i think it was more inspiring that a person with 0 knife making skills (myself) after just watching some videos managed to make a knife...sort of :)
@jimmygrey6848
7 жыл бұрын
Always pre-heat your quench oil.
@polishavenger1
7 жыл бұрын
Parks 50 does great at room temp, though! Exception to rule.
@gundanium3126
4 жыл бұрын
Jantz or USAknifemaker.com sells oil quenchents.
@dancrampton
7 жыл бұрын
Walter - Maybe I missed it, but did you actually talk about an "interrupted quench" in your video? If you did, just say so and I'll go back and rewatch the video. Maybe I don't know what that even means, but I think it means - like we see on Forged In Fire - you plunge your piece into the oil for a few seconds and then pull it out while it's still very hot. Frequently, as on FIF, it will flare up. I never have understood why they do this. It would make a whole lot more sense to me to leave the piece in the oil until it is fully cooled. Thanks for your video!
@josephrector8735
7 жыл бұрын
Yes he spoke about it..Generally he said it is for water. As for why do they pull it out when it is still hot on FiF it has to do with preference...There is a point where the blade is still hardening but has not reached full hardness and can be safely handled with gloves....say between oh i am not sure on temps but between 600-375 where it is cool enough to handle and still hardening but plastic enough that warps can be removed much easier...does that make sense..?
@dancrampton
7 жыл бұрын
Yeah it makes sense. It just seems risky because if you pull it out too soon, you won't get it appropriately hardened, and the window of opportunity is probably very small. Thanks for your response.
@cheepatiraviteja6508
6 жыл бұрын
why alloy steels are used for oil quenching
@Maxi-gm3cx
7 жыл бұрын
Hi I have a question about tempering I can not really find an answer to on the internet... Some knifemakers quench their knifes in water after a tempering cicle. Does anyone know the pros and cons of this method and what it does to the steel?
@HaroldLewinsky
7 жыл бұрын
Stachy it hardens it very fast, but there is a very high chance it will damafe the blade.
@Negrataish
7 жыл бұрын
www.bladeforums.com/threads/cooling-from-temper.1009018/ There is some info. I do it because there is no "cons" to doing it, it wont cause any stress, etc. and you can handle it immediately.
@jimmygrey6848
7 жыл бұрын
I do this occasionally, especially with knives that will have multiple temper cycles and a deep freeze cycle inbetween. Most recently I did it on some knives made of Sandvik 12c27 stainless, the reasoning behind is it needs a deep freeze cycle in dry ice and acetone solution, submerging a hot blade in this I am a bit wary of... So I cool the blade in water after the temper in the oven to incrementally bring down the temp to the deep freeze solution. The tighter I keep the cooling curve between the temper and deep freeze cycle, the better my results. By tighter cooling curve I mean the quicker I raise and lower the temperature. I let the blades air cool on the final temper though.
@jimmygrey6848
7 жыл бұрын
The Stoned Videogame Nerd Plate queching is done on steels that are air hardening anyway, the plates are just slightly quicker than the air for quenching, they also have the added benefit of keeping the blade dead straight. Myself and another knifemaker run compressed air between two plates of Aluminium for quenching certain steels. After quenching a few blades in a row the plates just get too hot, it's the exact same principle as a CPU heat sink with a fan on it to remove the heat.
@Maxi-gm3cx
7 жыл бұрын
Negrataish Thanks a lot this link was exactly what I was looking for!
@RealRuler2112
7 жыл бұрын
Bet you wish you would've known about a differential heat-treat resulting in a more shock-resistant blade before Forged in Fire, huh? ;-) =) With an interrupted quench, if you remove the steel from the quench after the steel cools below the nose of the TTT curve, does it not temper itself? This avoids pearlite and banite. The blade is mostly martensitic, which tempers due to the remaining heat left in the blade. (I've been under the impression that this is what the guys on Forged in Fire are doing & why they pull the blade out of the oil so it dramatically bursts into flame.)
@ericjoyce1911
7 жыл бұрын
If you look at the TTT chart you will notice the Mf line around 200°F. Martinsite conversion isn't complete until you get there so you really aren't self tempering unless you edge quench to below 200 and let the heat from the spine run back into the blade.
@tinnyblacksmith3434
7 жыл бұрын
Make a kukri
@robynmcdonald3942
5 жыл бұрын
Why would you pick 01 over 1095 ?
@luciusirving5926
2 жыл бұрын
My recent chisels from rebar are just as hard as either of those alloys. Never underestimate recycled steel.
@BernieFromTheInternet
7 жыл бұрын
Related Note - You CAN heat treat stainless in a forge (although it would be super hard in a coal forge)
@charlieorchard25
7 жыл бұрын
Why don't you cut out your designs with an angle grinder or band saw instead of grinding them out and causing unnecessary wear and tear to your belts
@alfreds8766
7 жыл бұрын
Buddy, if you read it in some boyscouts literature, do not waste precious time and just flush it down the toilet!!! #BestAdviceEver
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