After watching this video I think I finally get it.......MARK MY BLOODY STEEL. Great vid as always

i never cease to marvel at how talented a teacher you are. It really is quite a rare gift

Thank you for being one of the people that helps people like me like a real teacher should. I made a knife the other day and i wanted to know how hard it is and I learned that since my file doesn't leave a mark on it... it is hardened enough to be used for the purpose i designed the blade for! :)

Tripped over this video accidentally. Subscribed. Now I have to go through your whole list of videos.

I come from the woodworking world and I've always been a little leery of getting into steel, because you have no idea what is what. This is going to be enormously helpful, thank you so much!

You are an amazing teacher. My mind never wandered off while watching this vid.

logically and clearly presented, good teacher

THANKS SO MUCH I'm 21 and an apprentice machinist so this helped me a lot not many kids in my generation take machining its an important trade to keep around.

Excellent video Marc, thank you for sharing your vast knowledge with us.

I am a 24 yo small engine Mechanic who works with prefabricated parts with defined roles out of (from my perspective) unknown materials. Most pieces have already been engineered for defined roles and under normal use perform optimally. However without information such as part numbers or when a part has reached the end of its service life I often need to have an accurate view of what the material is. Thank you very much for your practical wisdom and the amount of time and effort you put into this video it is greatly appreciated and I look forward to exploring your channel further. Thank you again for your time!

A very practical instructor, keeping it old-school. I would have loved to had him as my teacher, so many years ago. I had to learn a lot on my own, the internet was still science fiction, LOL! 😁

All your videos are so well explained ..and a wealth of information. It has been a great review from studies way back ..

Thanks so much, Marc, I learned a lot from this video. Much appreciated.

Marc I am a machinist of over 30 years so you should feel proud with my two thumbs up. Good job

Thank you so much for teaching this lesson!

Excellent information presented by a professional. I'm absorbing like a sponge.

His knowledge is incredible ! Thank You for sharing. Much appreciated...

That was very well done, and so informative. Thank you.

Systematic info and clear explaination. Thanks!

That’s still a great video, and the song at the end carries so much passion. I learned a lot for your great content and it set me straight whilst welding 4041 chromium, manganese and gallium alloy steel. I really loved the judging steel composition through listen to the sound. Heck I so should fabricate a tool to drop chrome plated ball bearings. Thank heaps from your efforts to teach people. 🇦🇺🤜🏼🤛🏼😎🍀☮️☮️☮️☮️

I can't believe this video has so few comments. That was a very informative demonstration. Thank you.

Hi, And thank you so much for such a huge wealth of info in this video. I have never heard a lot of the thing you brought up about different steels. Thanks again. Take care mrbluenun

I love this dude... no homo.... lol been machining for years never heard of the bounce test with a marble for testing hardness. Pretty slick and easy an cheap. Learn something new everyday.

When I first started watching these videos that intro music had me thinking oh boy here we go some goofball but I got to say these are some fantastic videos you set up here Very very well done

You teach so well And have such a depth of knowledge Thank you for sharing and teaching One of the most informative channels

Thank you so much for this informative video.

Im in a process of being a machinist this helps me a lot thank you sir!

This channel is pure gold

Une vidéo de qualité supérieure! Bravo y merci beaucoup...

I truly appreciate your video you did a great job. Thanks Sir

,,even the video is older,it helps a lot to me thank you sir,

Marc, thanks for the informative video. It was a good refresher for me.I particularly enjoyed the spark testing section. Many years ago I started working for an engineering department where they were performing fatigue testing on specimens. Things were not making any sense to the professors because the specimens were failing at the wrong cycles. I was asked to take a look at the process . I suspected that the vendor was supplying us with faulty samples. so I set out to do some tests. I remembered spark testing was one way to identify carbon content of steel so I set up a grinder and camera. Sure enough the carbon content was much higher than expected. Your explanation was much more in depth - I was looking just at the amount of sprigs or branches in the sparks. Thanks again. Jeff

Thank you very much..I'm so happy finding this

Very helpful and informative video, thanks.

Great teaching! Thanks!

Great video, I really liked it.

These videos makes all other on the subject superfluous.

Thank you for taking the time to help us understand the process of testing steels. As a beginner Smith I am still learning about steels. Great video I learned something new today.

Thanks for that massive info.

Thankyou Thankyou Thankyou!!! This clears up so many questions I’ve been curious about being an amateur welder (tig). Great vid!

Excellant video and methods that I will apply in my work.

Thank you, this was an *excellent* presentation! I just wish that the sound was better.

Tnx Marc..this info is gold!

Extremely helpful!

thank you very much for this video. Very important for me.

This video was very useful. You are very clear when you teach. In addition, you are amazing for sharing your knowledge in this area. I think we need more people like you. Thank you from Argentina. P / D: Sorry for my English

Good explanation Marc.

THIS. WAS. EXCELLENT! Thank you.

Marc, I physically shrieked (.with) you at the same time. I can't say enough good about your vids. Extremely well explained.

Great person and teacher

5:33 This was my science project as a junior in high school. Had some 4130 from dad's race chassis mod, awesome sparks.

Great info - thanks

thank u sir very use full for me

Very very helpful !

Excellent information, thank you

No way, your'e not reading off of cue cards. That's so much information to just be able to pull out of your back pocket. If you're not cueing it up, I'm that much more impressed.

Super useful video, thanks! I’ve added it to my metalworking play list so I can refer back to it going forward. (Next step is I need to assemble a set of test samples to compare to each other :-)

Thanks this is a test I will be using.

As a beginner, It would be great, while talking there is a video popping what you mean. And zoom to that steel you are referring.

Old video - but worth a thank you!. the two different file grades is a nice touch, didn't know that!

very informative!!......thanks.

Excellent video it answered all my questions and a whole lot more. I am interested in not only machining as well as blacksmith work and i have most of the tools. the lathe i have is a Whacheon 21" x 80" D1-6 Lathe 12" 4-jaw Chuck, Steady rest, Coolant but am self taught having no prior training and have made some costly mistakes alot of broken cutters. But alot of fun learning and am now a subscribers thanks again.

I never get used to that utterly ludicris theme song of yours :D Good vid, man. Thanks.

thank you very much,now i have idea what steel to make a tool holder,thanks again cherssss.

great explanation ... thanks alot

Impressive. Thanks for sharing. I've found about half of the stainless steel in my kitchen is attracted to a magnet. I've also wondered if random bits of metal I've come across were actually wrought iron or even cast iron.

Very good video. Thanks for taking the time and making it.. Regards from brazil

thanks for the lesson

Just came across your channel, really good video.

Thank you I had the Jedi knight knowledge moment I believe.

Nice video

Love the song!

Kinda puts it all together - thanks. I'd never seen the simple scleroscope, I like that, would be great for comparing two similar looking articles. Usually i've been just using visual, magnet, and file, and usually gets me all I need. Think I'll start a sample box with marked loose ends. I'm getting more into metalworking, looking to build a decent lathe and get my shop upgraded. Always lots of projects to be done here on RelentlessHomesteading, and I've got some interesting builds coming up so lots to learn. Appreciate the video. I subscribed and will be checking out more of your vids.

Sorry about this joke Marc, but i feel you you will find it pretty good. "ODOR"! Thank you very much for sharing your experience with the world! Personally i learn a lot! Thank you!!!

Very informative videos! Well presented. Minus the weird intro and outro :P

I like what this video is aboot.

Thanks for the info that I have not gotten from any other sorce.

Thanks 😎

A multimeter is a useful tool for figuring out what kind of metal you're dealing with. Different metals have different voltage potentials with respect to a reference electrode.

I knew there had to be these kinds of tests to identify various materials without having to own or use expensive test equipment but I could not find this kind of information until Marc Lecuyer explained it. And, he explained it really well. Also, ID (mark) your material all up and down the material. Thank you, Marc.

For a newbie who walks into the offcuts section of the metal store looking for small pieces an incredibly informative video. Thanks very muchly! :)

Gran video, lástima que no esté en castellano! 10años ya desde su publicación? Será de mucha utilidad por mucho tiempo!

Excelent

good stuff !

Thank you for making this video. I wish I had taken machine shop in high school. (That was back in the Olde Days, when such practical courses were offered. I also wish I'd taken Business Typing - Who knew that computers were going to be rampant in the 21st century?). I instead opted for Drafting and Electrical, the latter which has served me quite well over the years. Drafting? The only thing I can say is that I learned isometric drawing. (And always have a decent eraser with you). My father, despite being illiterate, taught me automotive skills and "very" basic metallurgy, if you will, in his garage. Although, a couple of his pointers were wrong; "You can't weld cast iron or aluminum." You can, just not easily with a stick welder and the wrong welding rods.

Great n

The hills are alive With the sound of Boun-cing and Grin-ding....

amazing video , very informative, i will click your adds to help you generate revenue for your hard work, i know how much work goes on behind the scenes to make something like this come together

Hold on, I'm not supposed to go into debt while doing this? Now you tell me.

thanks

No sparks, file cuts well, gummed up grinder, stinks familiarly when ground, bouncing ball stuck; magnet? Extensive visual revealed coarse grain almost resembling hairlike fibers. I marked the unknown sample with my stamping kit (which is missing the letter t) with certainty as ca -shi . It seems to have a shelf life though :(. Great info, thanks Marc!

Needless to say, how perfectly you teach. But I wonder if the file can withstand a metal-test on cement carbide without getting damaged.

thank you I learned some on this video. Can a ball bearing be used instead of a glass bead (marble?) to make the schlerescope tester?

Gerar 👌🏻

Can't wait to use a piece of PVC pipe and marble to check different alloys.

Do you know how to detect presence of tungsten in cutting tools ? (to make sure tungsten carbide burrs from the internet really have the tungsten they claim)

This guy.... Is a..... Robot..... Destroy.... All..... Humans.....!

Super le truc de la bille de verre , moi mon meilleur truc a la maison c'est avec un grinder et cutting wheel , plus c'est dur a couper plus c'est haut en carbon , si ca ''colle'' sur le disc , c'est du stainless ou un aliage mou . un peut comme le truc de la lime

this song rocks

I ordered some leatherworking knives from a knife maker. Two knives were supposed to be made of M2 steel and one was supposed to be made of M42 steel. I think the knife maker may have used different steels. I was expecting the M2 steel to be darker and heavier. Are there certain liquid chemicals I can use to determine which steels have been used?