AEB-L Heat treat came out very well. Jacklore

[@Jackloreknives]

Although I have a nitrogen dewar I don't use nitrogen for the cryo cycle simply because here in the UK it is too costly especially when purchased in small amounts (over £200 to fill the dewar and it evaporates quickly) so instead have opted for using Dry ice/ isopropanol alcohol which forms a cold slurry of around minus 90 Centigrade which I am told is sufficently cold enough to achieve a good conversion of retained austenite. Dry ice is a quarter the cost of Nitrogen for me here in the UK and can be shipped to my door. I noticed almost a 2 point improvement in hardness values after the freeze cycle so it was certainly working well. In the past I have used a domestic freezer which has given a gain over as plate quenched harnesses but the dry ice slurry is a lot better. Perhaps Nitrogen would give an even better gain as it's much colder -260C but all data sheets seem to point to the gain not being so great, so I'll stick with the cold slurry freeze for the time being.

[@thorwaldjohanson2526]

You clearly read Dr Larin Thomas material. Awesome job on the heat treat. I think your choice of cryo is perfectly fine. Much better than what most do. Everything is a tradeoff, including cost.

[@Jackloreknives]

Yes Thorwald. Knife steel nerds. Very good:)@@thorwaldjohanson2526

[@S.Vallieres]

Liquid Nitrogen is -196 C.

[@JonDough-412]

Beautiful as always Mr. Sandy ❤ I need another Jacklore I bout mine from you during tax time about 8-9 years ago when you was hand stamping them still, mine was the little misprinted emblem one you had I love it!! It’s not a Jacklore classic it’s the littler one I think the wasp?or something like it. Thank you for all your hard work ❤ Bless you and them family buddy

[@paulmeyer1628]

Your skills as a craftsman always fascinates me Sandy and to watch you create such beautiful knifes is a privilege. I wish you a speedy recovery Sandy. Kind regards👍🏻

[@Gunslinger-1962-martin]

This is just one of the processes that the consumer doesn't realise sandy 🙌 + the time and effort with the other procedure's 👌 your a very clever & knowledgeable man Sandy 👍 much respect 🇬🇧👏👏👍

[@neanderthaloutdoors9202]

One of the most informative Knife making channels out there I reckon, nice one Sandy.

[@robg521]

Sore throat, so take a couple of days off… excellent Sandy, listen to your body and act accordingly. Feel good ? - do what you enjoy and do some work. Feel under the weather ? - rest up and chill out.

[@DDan61]

It never gets old watching you work Sandy!! I have watched all your videos and have seen you do soo much it amazes me, but, it never gets old watching a Master Craftsman at work! Take care of that cold and stay safe and healthy!!

[@ayobali0121]

As always Sandy great craftsmanship 🤩 keep up with the great work 🥰👍

[@Jackloreknives]

Thank you! Cheers Ayob :)

[@campfire52]

This is such a fascinating process Sandy. I am astounded at all the steps that are taken in order to reach the acceptable level of consistency that you require for your knife making. I had no idea that the process for tempering steel can be so complicated and intense. Your knives showcase your dedication to get as close to perfection as humanly possible. Thanks so much for showing us more of your knife making activities. Always interesting and always fascinating. Take care of yourself my friend, see you on the next one.

[@londonviking3801]

Would love to learn your skills - be an apprentice for your craft. I am fascinated by knife-making and thanks to all your videos, I am slowly absorbing your nuggets of gold.

[@jimrowland6089]

Looking forward to seeing those finished up. Your knives are always beautiful and functional.

[@PeteHosie-hb9qp]

Understandable ,working to so high standards feeling under the weather is no fun I bet ,I’ll keep a closer eye in a week and try again to purchase one of your knives,thanks for replying Pete

[@JonDough-412]

I believe I have the same knife you are making there matey in 0-1 ❤ Anyways I love my Jacklore❤ My favorite knife for sure I’m very proud to own one Cheers from the states❤

[@marcuskiritsis2076]

You hooligan staying up that late 😂 whatever next 🤭☺️ fantastic work sandy that really is perfection in the making. More happy customers in the way for sure 👍♥️♥️♥️♥️

[@philipdunn7538]

A wood worker’s under bench vise with big aluminium slabs bolted onto the jaws work great. Very quick to work when steel comes out of kiln.

[@leeheggie7043]

The amount of work you put into these is just unbelievable. I love watching these videos you make. I have been visiting your website daily hoping to catch a dark handle camp knife for sale out of the ones you were making in Decembers video. When will these likely to be on sale Sandy.

[@MPiKMS72]

This is awesome! AEB-lreat steel, glad to see this!

[@TheAnonymousSword]

Aebl is a phenomenal steel for scandi ground knives when heat treated properly. Nice job.

[@Jackloreknives]

I'm looking forward to finishing these, heard a lot of good about AEB-L, going to keep one for myself:)

[@thorwaldjohanson2526]

Depending on availability you might wanna 14c28n, slightly better than aebl. Essentially the same performance but more corrosion resistance.

[@patrickshaw7983]

That's very interesting, do you quench at all between temper cycles or just allow to cool at room temp. Nice looking knives.

[@jeremystill5442]

👍👍👍👍👍

[@jgbsweeper7325]

I couldn’t tell in the dark and if you said I couldn’t hear, but when you first removed blades from oven and clamped them in the plates it sounded like you were spraying something? What were you doing? Thanks for showing your process !!

[@thorwaldjohanson2526]

I think he used compressed air to cool it faster once it was clamped.

[@harwoodblades3633]

Nice one 👍 never worked with stainless but like watching the process .. just a question.. do you think a knife has to be tested on a Rockwell tester to be acceptable for sale 🤔 I'm only a hobby maker who maybe sells two or three knives a year.. most of mine i give away but always love trying to test everyone to its limits 😁 think the Americans have it sorted with the journey man test 👍 lovely work on the handles by the way 👏👏

[@Jackloreknives]

An RC tester just gives an indication that the blade will be OK, if you don't have a tester then you can just use the blade for some cutting tasks and see how well it holds it's edge compared to other knives, that should give you an indication of whether the heat treat is OK. You can also do an edge flex test, the edge should deflect but return and be springy, if it deflects and doesn't return it's too soft, if it flexes then breaks it's too hard and might fail on heavier tasks. Be careful edge flexing though as you can damage a good knife if you don't do it properly. Having said that destructive testing can be a way of understanding how well a knife is made again by comparison.

[@harwoodblades3633]

@@Jackloreknives thanks for getting back to me ..much appreciated 👍

[@PeteHosie-hb9qp]

Hi Sandy,Do you have any idea when these knives might be available as I’m trying to purchase one of your knives for my sons 30th birthday present ,thanks Pete

[@ayobali0121]

Pete your a great Dad 🤩 I would love one of these knives 🥰

[@Jackloreknives]

Hi Pete, I would estimate a week to 10 days from now, I'm taking a couple of days off to get over a cold and headache, don't feel like working at the moment, concentration levels a bit low

[@TheLiddokun]

I thought aeb can do upwards of 64 Rc with high enough austenizing temp

[@Jackloreknives]

With 15 minutes soak at 1975f and LN2 it may just be possible to hit 64Hrc but for the application to which my knives are designed with zero ground scandi edges around 60.5 to 61.5 is good. I'm happy enough with that thankyou.

[@Scruffybones]

Is it for playing fetch with?

[@Jackloreknives]

Ah it may have been in the past :)

[@markmaloney5146]

Sandy, why you using this steel , when sf100 is as good. Your really don’t need to use ice either, graham Clarke , of Clarkes knives say no need to, and he a metaloligist..

[@Jackloreknives]

Hi Mark, I have heard of Clarke knives, not far from me. The only way I can tell any difference is through hardness testing, the dry ice slurry appears to bring a gain of almost 2RC points over as plate quenched hardness and even an overnight in the freezer seems to up the RC a bit after quenching too but not by as much, I always did that even with SF100. All the data sheets from the steel developers include a sub zero freeze or cryo in their recommendations but say it's an optional process and that it does increase hardness and durability. Who am I to argue with a data sheet. I also spoke to Ground flat stock about this and it was them who suggested I use SF100, the heat treatment they suggest didn't require any sub zero component, and all those knives have performed well with very "sticky" edges too...A good steel. Going forward I think I'll always do a dry ice slurry cooling cycle for stainless like AEB-L I heard an interesting story about Swedish steels in general. Back in the past their steel some folk would say was superior to other steels but the only difference was the climate. Very cold in the Winter:) Sandy