How To Heat Treat / Temper Hand Tools & More!

[@electronicsNmore]

PLEASE READ! There are various techniques used to heat treat steel. The method outlined in this video is a "Basic" method which has always worked fine for me. You don't have to use "cold" water, "cool" water is just fine. Many people prefer motor oil instead of water because it reduces inner soft spots as well as the chance of cracking the steel. Many also prefer to allow the steel to be slowly air cool after the tempering process, instead of quenching in cool water. Thanks for watching

[@stearman]

electronicsNmore The medium used to cool or quench shouldn’t merely be a preference. What is used is dictated by the type of tool steel you are treating. W1 would be quenched in water as you illustrate. And who knows what a screwdriver is made of on any given brand right? O1 which is what I typically make punches from, would be quenched in oil. I use hydraulic fluid as it doesn’t stink as bad or scale as much. Not trying to be critical, just offering a little info. Excellent video by the way.

[@melgross]

Tim is correct. There are water hardening, oil hardening and air hardening steels. Using the wrong method results in not only sub-optimal treating, but possibly a damaged crystal structure, which could result in cracks. If you use oil hardening steel, you shouldn’t use motor oil, because the additives can cause various problems. Use quenching oil, which also has the proper qualities. You don’t have to (usually shouldn’t) quench after tempering, but the temperature should be brought down slowly.

[@DavidLindes]

@@awashburn6944: my (lay) understanding (so take this with a grain of salt) is basically that the ideal is to heat slowly and to a (relative to the next option) lower temperature, and cool slowly (no quenching). But because it may be difficult to do a carefully-controlled heat (especially with comparatively primitive methods), another option is to "over"-heat the metal (for the given amount of tempering desired), but cool it quickly, to avoid other side effects of being at that heat. For tools without the (as shown here) plastic (or wooden) handles, that are comprised only of the steel, a modern option is often to heat in a (toaster or regular) oven, which can (sometimes) give relatively controlled heating, and thus not require quenching. Other methods of slowing the heating (e.g. heating in a bed of brass shavings, by heating the container the shavings are in, rather than heating the tool directly) would presumably also not require quenching. Check out the Clickspring channel for some beautiful examples of that (warning: he takes all this to a whole other level; be prepared for some awe), including using a very careful process to get beautiful aesthetic tempering. For practical use, of course, this isn't required... and another common method is to over-heat one part of the tool to let heat slowly seep into the actual tooling surface(s), thus giving greater control where it's needed, even while using relatively crude heat sources (edit: as shown in this video, as well; see 9:17 and 10:17). A nice example of that (from Clickspring) is here: kzbin.info/www/bejne/fHe6hJScm9yNhdE ... and here's the aesthetic version: kzbin.info/www/bejne/hJnNmnyGpM2Ir9k You might also find this video about case hardening to be of interest: kzbin.info/www/bejne/jJCwoWScg998ipo And/or find useful information in some or all of the following: en.wikipedia.org/wiki/Tempering_(metallurgy) en.wikipedia.org/wiki/Hardening_(metallurgy) en.wikipedia.org/wiki/Quenching

[@DavidLindes]

@@awashburn6944 oh, and I just realized I kinda didn't actually answer your direct question: the reason one "shouldn't" quench is because that quenching creates stresses, and the a significant portion of the point of tempering is to reduce stress.

[@DavidLindes]

Aaron Washburn: interesting stuff; thanks! On that last point, it could also come from folks conflating the behavior of glass??!? With less-than-perfect annealing, glass can (I'm told, anyway) spontaneously shatter even years later just from the thermal gradients of daily life. I suppose especially if left near a window. I don't expect steels would be likely to do this, though perhaps if they were especially brittle???!? -- certainly the not quenched long enough scenario creates a plausible avenue for it, though that would still be within a short time, rather than spontaneous cracking later... I guess? :)

[@woosheroes494]

🔥 cracking video...! Takes me 50yrs back in time, when our Metalwork teacher showed us this method. As a kid it was so inspirational. Bring back woodworking and metalworking to school curriculums.!!!!!

[@markhonea2461]

Hi woo. Is it necessary start out using that specific type of steel?

[@User0resU-1]

Too dangerous 😮

[@garetz2011]

I learned it from my father in 1988. I did some firing pins, extractors and cylinder stops for my guns in the 90's. I had an idea int those days: what about to temper diping the steel on tin as soon as it becomes liquid? Just to keep the steel under tempering temperature for a longer time. I am an accountant now and I don't do these things anymore, just curious. I have a manual where it's written something like (to temper reamers and drills bits) "boil in water for 90 minutes".

[@putfilesnfriend1]

I wanted to temper a Shovel, so I got it red hot and dunked it into the toilet. The toilet then shattered and we had a small flood. Thanks ElectronicsNmore!

[@jbfthree1]

Dumbass....

[@chrispevey4886]

I like the way this guy talks. Very professional and clear to me. If you don't like it kick rocks.

[@electronicsNmore]

Thank you! Nice to see that there are viewers out there that stick up for me. The guy is a troll and a moron.

[@pemulungrosok2832]

I think he's teacher.

[@mikebell6926]

I had to listen a bunch of annoying weenies to get to this video, finally a a dude without a vag getting to the point. It’s appreciated brother!

[@jbfthree1]

Congratulations on the marriage 💑

[@jbfthree1]

@@pemulungrosok2832 damn!... I've never met teacher! ....Who's teacher by the way?

[@jimijones9725]

What a great demonstration. I finally understand this process. Thank you so much

[@kingsclownvideos]

Very nice tutorial. Something I have always wanted to try. Now I feel confident I can do it. Thank You.

[@attiasattias3488]

Thank you indeed .I learned soft soldring stainless steel from one of your videos .what an interesting time we live in .thanks again.🙏

[@Julian_Wang-pai]

Impressively good explanation - as unadorned and crystal clear as anyone could wish for, thank you 🙂

[@johnwilson3668]

Hi Great video That is exactly has I was taught at Mather & Platt , Manchester ,England ,in my apprenticeship . The chisel I made was the only one that didn't break when the instructor tested them They also taught me to case harden low carbon steel by heating to cherry red then sprinkling case hardening compound on the area to be hardened then quench. Other carbon source's options are bone, horse hoof clippings and even human nail clippings , any source of carbon . No tempering is needed because the steel is soft where no carbon has been diposited

[@electronicsNmore]

I've used that case hardening compound in the past. :-) Glad you enjoyed the video. Be sure to check out my extensive video playlists, rate thumbs up, share my channel with others, and subscribe. Thank You!

[@chriswest8376]

Great video! Thank you. This advice aided me in making a little tool I needed and saved me about $45 VS buying one. The tool I made withstood the job no problem.

[@electronicsNmore]

Glad it helped Chris! Be sure to rate thumbs up, consider subscribing if you like a wide range of helpful and informative videos, and look over my extensive video playlists below for many other videos of interest to you. Taking one minute to share a link to my channel with others on social networking sites would be greatly appreciated. Thanks kzbin.infoplaylists

[@Busted.Knuckles.Garage]

I'm not trying to be a know it all, or anything, just a suggestion. The most heat from fire, torches, oxi-acetylene, map-gas etc. Is at the tip of any open flame, so a half in above the tip will heat up any object so much quicker, and will save you a lot of fuel, and hard earned money over a life time. Try it you'll never go back to jamming it into the blue part of the flame again. Time is money especially in business. Thanks for sharing, done nice and simple. The old kiss method. Again Thanks for the knowledge and sharing it. Andy T Barrie Ontario, 🇨🇦

[@Nice_Person7379]

thanks a million! i had to do my D&T homework and you saved me! plus i like the way you talk, its quite concise and satisfying

[@Mrhobbyjoy]

I enjoyed every second of the video. Your explanation was wel detailed and very clear. I can now repair my 48 year old Craftsman tools to which I am very attached! Thank you for that!

[@bryandraughn9830]

Wow! You've responded to so many comments! Much appreciated! Great videos!

[@electronicsNmore]

Glad you enjoy them Bryan!

[@emadigan523]

Nice clear and easy to follow explanation. I have watched several videos where the various colors are explained but this video is the only on that makes sense. Thank you for sharing.

[@melgross]

emadigan523 makes sense, but has a number of major errors.

[@mrfender5001]

@@melgross Like what?

[@gemunujayasinghe618]

Great video . Sir , thank you so much for sharing your knowledge . I am from Sri Lanka .

[@piecetoyou8285]

Owe dam ive been doing wrong for 20 years, iv been heat the ends up straight away Time to change my method, such a great bit of knowledge cheers

[@Pete4875]

Great Job! Nice SIMPLE video on Harding.

[@electronicsNmore]

Glad you liked it Pete!

[@ethanelzinga7559]

I've spent the last three hours trying to find a video teaching how to heat treat knives, but everything has been gibberish until now, this video was awesome so thankyou

[@giggidygiggidy4884]

Ethan Elzinga don’t heat treat your knives this way unless you are ABSOLUTELY SURE that it’s a water quenching steel. If it’s not you will introduce micro fractures to the steel and will destroy them.

[@sirdewd2197]

Giggidygiggidy interesting... and how do you find that out?

[@giggidygiggidy4884]

Sir Dewd each steel you buy, or find for that matter has a specific way to heat treat it. Some are oil quench, some water, and some air. There’s a lot of information out there if you look for it. There’s even an app for it called Heat treat that gives all the information on just about every steel you could ever think of.

[@melgross]

How did he find that out? I don’t know how he knows it, but if people stop being lazy, they could, you know, look it up! Find a publication, or Wikipedia, or a channel on you Tube from a company that does this, or a web site from one. Or someone who is really an expert, such as the Essential Craftsman. There are a lot of guys on You Tube who are over their heads in a number of things. They may know some things, but not others. Just look up heat treating steel.

[@enescakr4203]

thanks for the tip, im trying to make bits for my dremel and the tips i made are like made out of dough

[@AaronRiegel]

That was perfect! This video was a great investment, thank you for making such a unique and informative instructional/ educational video

[@umlooad]

Looks so easy, but I think it needs some practice. Very good to follow the overall process and you pointing out the important facts.

[@electronicsNmore]

Yes, practice makes perfect. Thanks for watching! Please check out my other videos and share.

[@makzerty440]

quenching liquid is determined by the manufacturer , some metals quenched in water ans some others oil and others require cool blowing air ,, tempering is 700c times the volume of the tool ,, heat treatment is 3 years training for diploma and reliability of workers ...for instance , 4terpilar 200t truck after welding chassis he spent 24hours in 756c to harden welding giving the truck the ability to haul 200 tones....if bits are made by chromvanadium or chrommoly it's already chemically treated and hardened...thank you for your tutorial...i did your method years ago on cheap Chinese bit , it didn't work , the bit broke after 5sec under screwdriver ... thanks again... more success

[@electronicsNmore]

The bits treated should ONLY be "High Speed Steel" type. Thanks for watching!

[@makzerty440]

@@electronicsNmore my pleasure ,, n thank you too

[@codycstone]

You're awesomely informative and I appreciate that more than you know! Subscribed, my new KZbin teacher

[@electronicsNmore]

Great to hear Cody! Be sure to look over my 650+ videos for many other videos of interest to you. Thanks

[@Smokofilomidanek53]

Cleaver video. Thank you so much, - you explained that so clearly.

[@electronicsNmore]

Glad you enjoyed it!

[@jukeboxhero1649]

I never quenched a blade at tempering just let it air cool. Is quenching better? Does it differ from air cooling?

[@themadman450]

Yes, it is different.

[@czarekp3552]

thanks for that, really needed it and you've explained it perfectly

[@catherinekaiser2804]

If I wanted to make stainless steel screws blue/purple for the ~aesthetic~ could I just use a heat gun at a steady 550°F until they turn that color then quench them? Would tempering them like this affect their structural integrity? Any advice or tips would be appreciated!

[@etebol]

Thanks for explaining and making this video.

[@electronicsNmore]

You're welcome! Glad you liked the video! Be sure to check out my wide range of videos and share. Thank you

[@Hamid-az]

Hi dear. Very good video and useful. I did it and see how much is it work ❤

[@spudhut2246]

Excellent explanation.

[@dcberkland]

A quick question... isn't it best practice to anneal the material before it is hardened again to make sure that martensite forms in sufficient quantities? I'm self-teaching myself on this topic and have read about the idea stated above. Any insight would be greatly appreciate!! Very informative and to the point on your video though. Thanks!

[@electronicsNmore]

Please read my pinned comment. :-) Thanks for watching!

[@jbfthree1]

He's far too important to answer your question. Sorry for your inconvenience! But the bitch is still busy. B.i.s.b.

[@patrickfrausto9866]

Very good I learned much on my quest. "Reminds me of Conan " Ahh the rule of steel, THAT you can trust and nothing else" LOL. seriously, Thank you much!

[@electronicsNmore]

Thanks for watching Pat! Be sure to rate thumbs up, consider subscribing if you like a wide range of helpful and informative videos, and look over my extensive video playlists below for many other videos of interest to you. Taking one minute to share a link to my channel with others on social networking sites would be greatly appreciated. kzbin.infoplaylists

[@southern_merican]

Simple IS better! Great video 👍

[@electronicsNmore]

Yes! Thank you!

[@swampydude1356]

nice it worked i heat treated my hex keys now they are indestructible

[@mrfender5001]

Great fast to the point video! Awesome job!! Only thing I see an issue with is not letting the temper process cool down slowly instead of dunking it in the water. But other than that Great video man! Keep it up!!

[@electronicsNmore]

Yes, some recommend placing the item inside a small toaster oven to cool very slowly. Thanks for watching!

[@oneeyedphotographer]

I've done further searching, air cooling and quenching are both correct, depending on desired outcome. Used engine oil got an honourable mention for its carbon content.

[@publicojornas1787]

Very professional and clear. Keep that way.

[@electronicsNmore]

Glad you thought so! Please share the video link with others, and look over my extensive video playlists below for many other videos of interest to you. Thank you kzbin.infoplaylists

[@brandonsalas6552]

Awesome video but I’m having trouble can you use this technique on partially painted blades? And with map gas torch

[@glennlopez6772]

Thanks for the video! Really useful to know these things! It would be nice if you added a list of the colours, the corresponding temperatures and the applications for tempering! Then the lazy folk could take a screenshot and save it for quick reference! Thanks again!

[@playvoltage]

hello just a quick question - can I use a butane torch instead of a propane torch or will it not be hot enough? thank you

[@electronicsNmore]

For small metal objects, butane should work fine.

[@DIGOLOGIST]

I am planning to make a couple of shovel for metal detecting at my job. I will design them with Delta cad, then plasma cut them. Do you have any videos on how to heat treat & temper shovel blades. I need them to last. Thanks.

[@electronicsNmore]

Unfortunately I don't have any videos for that. Thanks for watching!

[@shad7pk]

Very Nice............ Thanks for info

[@TotoGuy-Original]

Great video just what i was looking for thank you

[@electronicsNmore]

Glad to hear it!

[@keithseifert]

Thanks for this. It always intimidated me before

[@electronicsNmore]

You're welcome Keith! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. Thanks for watching kzbin.infoplaylists

[@pnowicki879]

Very interesting and resourceful channel. Thanks

[@electronicsNmore]

Thank you! I have many excellent videos on this channel. Be sure to check out my video playlists, rate thumbs up, and share.

[@philchia4764]

So you sharpen, then temper? Does the heating process not dull the edge?

[@electronicsNmore]

Hi Phil! I like to shape the tool first(like an old screwdriver tip), then harden, then sharpen AFTER tempering(especially for a knife blade). Thanks for watching! Please check out my video playlists and most importantly share my channel with others.

[@738polarbear]

VERY good video,very detailed and explained.

[@electronicsNmore]

Glad you liked it! Be sure to look over my extensive video playlists below for many other videos of interest to you, use supplied Amazon links to support my channel when making purchases(No added cost to you), and share links to my videos with many others on social networking sites. Thanks, and stay safe! kzbin.infoplaylists

[@digimon916]

Thanks. Im gona try doing this to cheap throwing knives

[@AldoSchmedack]

When tempering you should hold it at that color for 120-180 seconds, and you shouldn't dunk in water the second time, ideally. Otherwise spot on!

[@devilvortex1]

otherwise it become soft?

[@skynalast3819]

congrats for your new subscribers. 👍 I'm Inn

[@yellowmk116vt]

What a great video!

[@rmarques82]

Might be a silly question, but if I re-temper the wire cutters of my leatherman, it could cut harder wire that by now doesn’t cut? (lets say fishing hooks)

[@electronicsNmore]

I wouldn't re-temper. The alloy used can only be made so hard. Thanks for watching!

[@stemer1149]

Excellent demonstration, particularly the tempering. Thank you very much.

[@electronicsNmore]

You're welcome! Be sure to check out my extensive video playlists for other great videos of interest to you, rate thumbs up, and share my channel with friends. Thanks

[@crazycressy7986]

Will this work on a cheap garden spade edge?

[@maxuabo]

Good stuff, straight forward to the point and very informative.

[@electronicsNmore]

Thanks for watching Max! Be sure to look over my extensive video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others. kzbin.infoplaylists

[@will7its]

Love that blue color...

[@electronicsNmore]

Aquamarine, other shades of blue, and canary yellow are my favorite colors.

[@armarra]

nicely done. I wonder if an infrared thermometer could be used to be more precise with the temperature ranges. I know it's not needed, but being a novice, it would assist. My aldi one won't go that hot for readings as it tops out at 380 celsius, wait a minute, you're talking Farenheit, so yes the Aldi one will work !

[@electronicsNmore]

Glad you liked the video! Be sure to check out my extensive video playlists below for many other videos of interest to you, and share my channel with others. Thank you kzbin.infoplaylists

[@JawellNofine]

Thanks a mil, very clear instructions. I will be using this methodology on my tools.

[@electronicsNmore]

You're welcome! There are a few methods, this was the simplest. I have a lot of excellent videos on my channel that cover many different subjects, so be sure to check out my extensive video playlists for other videos of interest to you, rate thumbs up, and share my channel with others. Thank You

[@seanpatterson1609]

Helpful video. Thanks for sharing.

[@electronicsNmore]

Glad you liked it Sean! Be sure to look over my extensive video playlists below for many other videos of interest to you, use supplied Amazon links to support my channel when making purchases(No additional cost to you), and most importantly take one minute to share links to my videos with others on social networking sites. Thank you! kzbin.infoplaylists

[@tinybusinesses1566]

Hi. I lost various steel and cast iron hand tools in the 2018 Paradise "Camp Fire". I saved some that were totally burned and then rusted in the ensuing rains. The little handles on my vises, which tighten the bases, are really bendable. Can these be rehardened via your process? Also some of the machine screws on my vise jaws are soft now. And the main jaw threading screw needs to be softened to straighten it and then rehardened - can this be done? Thank you for your help

[@KaylaJoyGunn]

Hi, I heard those were caused by emp, so the metal actually heated up and caused the fires. At first I thought that sounded crazy, but I saw many bizarre things like nails underwater that had charred the wood they were driven into on a dock, bridges with holes melted through them miles from anything else burning, and rows of bombed out cars on the beach, also miles from any external fire source. Did you see any evidence of this kind of foul play in your area?

[@steveforth4469]

I was taught at school to allow steel to air cool after tempering. Is quenching after bringing to tempering temperature a normal process? Doesn't that reintroduce stresses back into the steel?

[@computername]

The temperature isn't high enough to make new Martensite when quenching. Only above a higher temperature the grain would change the cristalline structure to contain the carbon in a different way, which is then creating Martensite (This is the inital hardening process), but this doesn't happen at tempering temperatrue. Essentially, you are only changing some of the Martensite back to the less hard, normal grain structure of the given carbon content steel. There are always more or less residual stresses in steel, even when cooled slowly. The brittle fracture observed in a hardened, untempered steel with high Martensite is a different problem from residual stress, which do not necessarily have to be a problem for the application.

[@steveforth4469]

@@computername Thank you for the response

[@computername]

@@steveforth4469 Well, learning myself (It never ends in this metallurgy so happy to correct me when I'm wrong). Reading questions on a topic is the best test of own understanding. I couldn't immediately answer your question and had to think about it for a minute so thanks for the brain starter :)

[@paschalia100]

Hi, do you file test these tools to check the hardness afterwards or is the colour scale always correct? Thanks

[@ziaudeenmahomedsayid8022]

I keep denting store bought cutters on fishing cable and wire i want to do this on the blades of my side cutter what colour would i quench that at?

[@electronicsNmore]

Use higher quality tools with hardened cutters.

[@euliemojica3714]

Hi.. Is it cold water also when you temper it?

[@electronicsNmore]

I used cold, but some people prefer room temperature to cool.

[@ozziejim8472]

That was spot on, thank you !

[@Ace-ig6vs]

Nice work. I'd like to do something like this, I'm a first timer though. I'm making a set of pin punches and center punches but all I have is a mapp torch. Would that work fine or is it too hot?

[@kashi2843]

this is great, but why are you tempering it to blue and then cooling off immediately, shouldn't tempering require the part being tempered is cooled nauturally with air?

[@electronicsNmore]

Just showing a method I was taught back in the 80's, there may be better methods. Thanks for watching!

[@liveonthesun3368]

Nice info on the tempering colours. I've a question though. Aren't you supposed to air cool it for tempering?

[@electronicsNmore]

Actually, oven tempering is the best. :-) Thanks for watching!

[@Tokyo-go2du]

Hi, I'm making locksmith tension bars outta thin pieces of steel and after I heated them up to curve them into a more fitting shape I hardened them post orange glow and was surpriced to find out that they got soft as heck. Is that because the were too hot and because I didn't temper the pieces of steel?

[@electronicsNmore]

What type of steel?

[@EgadsNo]

Have you tried doing hollow ground edges (like gunsmith screwdrivers) for flat head drivers? They seat deeper and do less damage to the screw face in my experience, I've never heat treated them as since I started doing that all my tools have that non conductive sheathing on the shaft, might try to roll it back though and give this a whirl, I use them too often as a chisel for lock nuts.

[@electronicsNmore]

No I haven't. Thanks for watching!

[@EgadsNo]

Cool- then maybe I have a nice little tip for you for once :) You basically want to grind down the profile of the angled edges into concave faces, just about the only trade that uses them are gun smiths since they are so protective of the screws.

[@maryjoytupas4205]

@@EgadsNo ni in

[@edbergevercide3074]

because of this video, I'll ganna try to DIY it at home...

[@ishsiriram8286]

Thank you. Well explained.

[@samsue1224]

Awesome, thanks you have a new sub here now 😁 Question, is the final sanding/cleaning up purely for aesthetics?

[@electronicsNmore]

Great to hear! Yes, just for looks.

[@ukbarney1]

Can you temper if previously hardened such as that big screwdriver there?

[@jmsjms2735]

All what matters is, does it work as intended? And once it does, all criticism fades away. Thanks for the effort. I shall test it sometime

[@electronicsNmore]

It's worked fine for me over the years. Thanks for watching!

[@mjac5044]

Very CLEAR instructions on the process along with good video. Thank you!!

[@electronicsNmore]

Glad you appreciated the video! Be sure to read my "Pinned" comment, and look over my extensive video playlists for other great videos of interest to you. Thanks!

[@jwandhistools]

I need to heat treat a threaded rod. Do I thread it before or after treatment?

[@electronicsNmore]

Thread first.

[@jensonrozario]

Thank you. I will share your channel. Go on. Liked your simplicity in video. Great.

[@jaydelair7718]

try cold tap water quench with .08%carbon steel then drop iton theconcrete.trythe same with a piece of leaf spring.if the .08 carbon steel doesn't crack in thecold water itll surely break when it hits the floor.carbon content determines all buddy

[@garethbaus5471]

.08% carbon isn't hardenable, that starts around .2% and most springs are around .6% carbon O1 the steel mentioned in this video is around .9% carbon. I check my knives for stress cracks by dropping them tip first onto concrete after hardening and they are normally made of 1095 which is roughly .9% carbon you can significantly change the property's of a steel without changing its chemical composition.

[@joser1219]

Will this work also on brand new router bits? So there's no need to re-sharpen them, right?

[@electronicsNmore]

Don't heat new router bits. Try sharpening them without creating too much heat. Keep dipping them in cool water as you sharpen them so the bits don't lose their temper. When you're done, apply a thin film of motor oil to the bit's surfaces before storing.

[@joser1219]

@@electronicsNmore thank you

[@wahyudwiendarendar6281]

Can we teharden a bar of steel which has been hardened before

[@wags9777]

He gets so excited about the color changes

[@bobmiah]

sorry if i have missed something in the video i havent watched it all but does this strengthen the metal

[@SOLDOZER]

No, its just all for fun and laughs.

[@bobmiah]

@@SOLDOZER The Brown Bear society has evolved in a way which cannot be comprehended simply due to the fact that they are using 8G LTE broadband to connect/interact with eachother via the popular social media app Viber in order to transfer data at extremely fast speeds

[@stevelong9328]

very nice

[@alhefner]

The tempering requires a SLOW cooling! You NEVER quench in oil, water, or anything else during the TEMPERING process. for the hardening process, which is before tempering, YES, cool O1 tool steel quickly in OIL! the "O" of O1 tells you that the steel is to be OIL quenched.

[@SgtJoeSmith]

I was taught to use used motor oil to add carbon to the steel. (Yes I saw your post that some use oil). Thanks for great video

[@electronicsNmore]

Thanks for watching Joe! Be sure to look over my extensive video playlists for other great videos of interest to you, rate thumbs up, and share.

[@SgtJoeSmith]

@@electronicsNmore Will do

[@Loganb611]

first video of yours I have seen, earned my sub. awesome. thanks.

[@electronicsNmore]

Glad you enjoyed the video! Be sure to look over my extensive video playlists for other great videos of interest to you and most importantly share. Thanks for watching and subscribing!

[@nstauf]

Fantastic video! I've it hasn't occurred to me to retemper broken screw drivers and such. Out of curiosity, why worry about ruining the temper if the tool when reshaping of you plan to retemper anyway?

[@electronicsNmore]

Thanks for watching Nate! Sometimes you may want to reshape without having to retemper. Be sure to share my channel with others and look over my extensive video playlists for other great videos of interest to you.

[@kennethlazenby4748]

Good instruction however the last step where you draw back your steel. Your color is good ,but let it cool slowly no water just stick in some heated sand and let it cool slowly. Better results regards Ken

[@mtrltoolman]

Great video Douglas, thanks for sharing.

[@GarageKnight]

Thank you this was a very good tutorial!

[@electronicsNmore]

You're welcome!

[@danpinnell7502]

No it wasnt. He is so incorrect at this it makes my stomach hurt. Blind leading the blind here

[@GarageKnight]

@@danpinnell7502 Well what's wrong with it then? It worked on my couple of tools that I tested

[@electronicsNmore]

@@danpinnell7502 Get a life buddy, and take some Tums for your stomach ailment.

[@timbotide]

Hello, could I use this same process to harden screw heads to make them more durable?

[@electronicsNmore]

You should look into "case hardening" compound.

[@19culprit25]

This is very informative. Thank you

[@electronicsNmore]

You're welcome! I have many videos on my channel that cover a very wide range of subjects, so be sure to look over my video playlists below and share. Thank you kzbin.infoplaylists

[@tombouie]

Thks for a keep it simple video. Instead of the color of hot metal, ?can I just use an infrared laser thermometer?

[@electronicsNmore]

Color is better, for me at least.

[@tombouie]

@@electronicsNmore Thks for the reply. ?Could you put this wiki heat treating link in your video description? en.wikipedia.org/wiki/Heat_treating

[@gdl357g]

Thanks for clarifying questions I had about this process with this in-depth video. I see you don't mention anything about annealing the metal after tempering. Is it not important?

[@electronicsNmore]

What I showed was a "Basic" process. Thanks for watching! Be sure to check out my extensive video playlists for other great videos of interest to you, rate thumbs up, and share.

[@75fayz]

A Clear, strait and nice brief about the topics................. Thanks a lot.

[@electronicsNmore]

Glad you enjoyed the video! Be sure to rate thumbs up, check out my extensive video playlists for other great videos of interest to you, and share. Thanks

[@balaramchapagai1802]

Which is the hardest color?

[@davidsailo4802]

Well... it's the first info to me about the connection btwen magnet and tempering...

[@ShannonNaill-l4l]

Can you use used motor oil

[@barry-cq4xg]

this is a very good video and very well explained. You are a nutural teacher and communicator.

[@electronicsNmore]

Thanks Barry! Be sure to look over my extensive video playlists below for other videos of interest to you and most importantly share my channel with others. kzbin.infoplaylists