Tempering spring steel, blacksmithing, bushcraft, forge. 

Great video man! You're the kinda shop teacher we wished we all had in school.

Hey, Big Ditto on THANK YOU. I had a spring clamp on my grounding welder lead, that had totally lost its springyness, making the grounding clamp useless. I crudely followed your wonderful video with two propane torches, a magnet, used motor oil, warmed, on a propane camp stove, and even clueless, I still got positive results renewing the coil spring in that clamp. I looked HIgh and Low for a video like yours. So glad I found yours. So Appreciative, Mo

Thank you for a most informative video in laymans' terms.. It answered all my questions without me having to ask them!!

VERY illustrative and down to the ground. Great stuff, love it.

No messing about and straight forward. Very helpful, Thank you!

Thanks for sharing your experience. I was needing a simple explanation that I could understand. I look forward to seeing more of your videos. Thanks again

A really nice job of explaining the process. Nothing but good solid information. Thanks for your effort, you are an excellent teacher.

You explain this process perfectly. Thank you.

BEST ....simple and strait forward vid ive seen yet....owe eye.

That was information I have been looking for a long time. Thank you for sharing your knowledge.

A brilliant and very informative video, thanks for taking the time to make it, cheers.

Well made video with good explanation, without all the boring extras.

thank you! I've been looking for the answer for this problem for a long time! bless you

Excellent presentation. I came for the info, stayed for your voice. Thank you sir.

Great video! Thanks for sharing your skills!

A good explanation and demonstration of hardness versus toughness. I need to be able to make flat springs for my locking folding knives. Your video confirmed what I had thought to be true. Many thanks!

Cheers from loxahatchee FL. 2 words for your video Absolutely Perfect!!

Fantastic video, basic and to the point.

Wonderful video, thank you for posting it! Looking forward to seeing more of your videos.

my search is over.great video.answered all my questions

Thank you so much. You explained exactly what I was looking for. Great job.

Learned so much here. Amazing.

thanks for the straight forward info! putting me on the right track.

Very good explanation of the process, thank you!

Brilliant. I really liked this video. Very educational too.

Very clear and straightforward

you are a great teacher my friend.

Thanks for that video I loved it! It helped me no end, I was doing tempering for an assignment and needed some tuition, cheers lad! Keep the videos coming and STAY DENCH.

That's a good video! I'm used to hardening/tempering, but I'm making a spring at the moment and having real trouble getting an even heat at the tempering stage because it's really thin! What I found useful about your video was where you pointed out that the steel can look blue when it's still not quite up to heat. I'd not thought about that before, just assumed it went straw, brown, purple, blue, and blue was correct. So now I realise that, I'm thinking more heat! Thankyou for sharing!

Thank you sir! Just what I needed to know to modify that spring from my BSA Lonestar hammer.

Great video, thank you for posting this

very informative for the beginner straightforward talking enjoyed most usefull thanks antony

Thank you for sharing your knowledge!

Great video, best explanation on tempering I've seen; please post more videos.

Finally.... A video the explains the differences in simple terms!!!!!

Cheers mate it used to take hours to find out what you just portuned in a library my man? Hats off ! ;)

excellent video,,ya explained it in terms even then non-blacksmith can understand,,,looking forward to more

Awesome, just what I was looking for. I'll add this to my favorites.

Very nice educational video !

Thanks! I was making a 2ft sword for the fun of it out of some annealed spring stock and this did very well.

Thank you for the great instructional video.

Exactly what I needed. I'm making a spring for a pen knife. The first one had a slight bend in it after quenching from critical. It snapped as easy as a biscuit :) What's funny is i kinda knew it might snap,and i still tried to bend it. I wasn't sure if i quenched it again after the tempering.This is the exact answer i was looking for.Cheers.

Great video. It was very well explained.

Bravo! Bravo! I learned a lot! Thanks.

Thank you for this great informational post.

thanks!! i've seen a lot of video's of tempering and hardening!!! A LOT!!! and non of the video's explained this good. NON!!! now I understand it... THANKS!!!

Thanks for this. Just what I needed to know.

Very descriptive. Thanks for posting this video

Very helpful and informative. Thanks

Very educative video!.Thanks!

brilliant video. well explained. appreciate it.

AISI/SAE 9254 is the common spring steel (and cheap). Tempering is 2 steps process. First you do quenching ( 45 mins at 870 celcius to reach austenite point then cooling in oil at 80 celcius) , and then you can temper it 150 - 250 - 350 - 450 and 550 celcius. Let it cooled down in room temperature. And a tip, would be great if you coat the steel with copper. It will prevent decarburisation and after quenching and tempering you will see the copper will come out by itself.

great video, thanks for the help

Thanks - again- You are very generous

Thank you for taking the time to make this great video. A little better lighting would help but I am not looking a gift horse in the mouth here. I learned a lot. Top notch.

Well explained and easily understood.Thanks

Excellent video , and very well explain

Great video, thanks for sharing!

Brilliant vid, thanks

Great video,all of what you need to get stated without the tons of bs some use to try and scare folks off.

Great video sir thank you for time and effort.

Thank you. some very good basic information.

A good lesson, thank you for sharing.

Great video, very helpful.

thank you. was very good. that old file went to a good cause

thank you so much for your nice video. Every thing was explained in an easy to understand fashion, simple and with examples. Hope you can post more videos like this on forging process too, for beginers like me..

I enjoyed your video. I hope you will make a video showing the proper process to temper a knife blade. Some videos recommend placing the knife in an oven at 350 for a couple of hours but i think that will make the edge soft. I hope you have the time to show the proper way...Thanks

Thanks Your a good man.

Good, sound engineering advice.

Very helpful, thank you!

Nice video thanks for the info keep it up

great video, thanks!

Great video, thanks a lot.

great video , thanks

thank you very much, great video

Thank you. Very helpful.

informative without being hours long, enough well explained information for one to proceed, only recommendation i can make is video quality be it the device or format a clearer picture would be helpful for those who weren't confident they interpolated the description given correctly. otherwise a great video thankyou.

Hay there, not really what I was looking for but still very interesting. Grate video.

Very helpful thank you sir🖒🖒🖒

Good video well done

thank you for your time sir

I just caught your video. That was very well done, very little embellishment, with very clear examples. Thank you for the time you put into this video. Now I am curious about your social commentary. :)

very well explained thanks

Very helpful! Thank You.

thank you sir, very good information.

thank you, that was perfect.

Very helpful, thank ya.

Well done, sir.

Thanks for the video!! I was looking all over to find a straightforward tutorial on how to do this and this one worked great! Would like to see how to harden just the knife edge and leave the rest tempered. Every time I try to do it the rest gets too hot and I have to retemper it.

wonderful, thank you

thanks for this video! im making a viking sword from an old leaf spring and i need to know this!!!

Thank you. I am hoping to make me a fillet knife from some leaf spring. I hope that returning it to Spring temper will make it a superior fillet knife.

i would like to see a vid on that knife process. tkx ur vid was simply great

Good vid. Thanks!

I'd like to see a video on how to make/temper a knife like yours in that video. Thanks for a very informative video

Good video

good stuff

This guy does a nice job, he should invest in a pair of safety goggles that file could have done a lot of damage.

You can also take two pieces of spring steel and weld them to the sides of a piece of tool steel, like a sandwhich. This will give you the toughness of spring steel and a hard tool steel edge

@NaturalBushcraft Thanks Ashley, It means a lot coming from you.