CHIPS, SPEEDS AND FEEDS 1, VARIABLES OF METAL CHIP FORMATION AND HOW TO CONTROL THEM, MARC LECUYER

Part one of a video presenting how chips are formed during a machining operation. Angles of attack, depth of cut, cutting speeds and feeds are explained in a way that will help the novice machinist obtain a better cutting action and prolong tool life. Thatlazymachinist Marc L'Ecuyer

[@yvonnebotha6643]

I must say - I loved your "Butter" analogy!! Bravo!

[@wanzunulabenardezekiel2147]

With the explanations like these,i can operate the with confidence. Thanks

[@Gkuljian]

Geez, so many of your videos show me things I didn't know, even though I studied this in school. I've been using positive rakes on everything.

[@THATLAZYMACHINIST]

Hi G! I for one don't know everything and I know that because my wife told me so! Thanks for watching, Marc

[@jy6174]

great presentation Mark, thank you

[@padlok1520]

thank you, sir. these videos are an amazing resource, i'd be unable to learn this stuff if you weren't teaching. to your health!

[@jonlihou668]

Your videos are much appreciated!

[@Thekoolbiker]

An excellent video by a great Teacher. Thank you sir!

[@pacokelly5536]

Nicely explained thank you.

[@billchiasson2019]

Great video,,, you're very thorough on explaining the subject matter thanks.

[@chrisadams6292]

for many, many years I have been doing the correct thing , but , did not know why . many thanks Chris Adams

[@ProfRonconi]

Very informative and useful content. Thank you!

[@DudleyToolwright]

Thanks for the very informative video. Great as ever.

[@saito2134]

Thank you for another great video! I have wished a few times I could go back in time and be one of your students in your classroom shop!

[@fanienaude3313]

Awesome!! Thank you for a great video.

[@vajake1]

Lots of good information. I'm going to put it to good use! I also loved the out takes! Thanks for posting this!

[@fcarp1685]

Thank you for taking the time to explain this! I have hoped someone would explain this and it is a great troubleshooting tool as I learn the lathe. Thank you again.

[@nickphillips4035]

Taking a millwright course right now for my apprenticeship and we have been watching your videos. These videos are honestly so informative and easy to understand. Look forward to putting it all into practice in my daily work thanks again marc

[@broncohot1]

Great info. Learned something I didn't know, looking forward to Part 2. I start Machinists technology this August at the local community college. Thanks

[@Orcinus24x5]

Hi Marc! I've been subscribed to your videos for a few years now, and I always enjoy learning something new, or even revisiting old topics as a refresher course. I really appreciate the fact that you go to great lengths to explain the -why- of doing something a certain way, instead of just saying "You should do it this way" without any explanation. This video in particular is an excellent example of that, as is your video on single-point threading on the lathe where you explain exactly why we should use slightly less than 30 degrees on the compound AND what happens if we don't.

[@cavemansmancave9025]

Great explanation, Marc. One comment for those who didn't see this, the diagrams of the cutting angles are all cross section views, not top views. Great diagrams, though. Thanks, John

[@AmateurRedneckWorkshop]

Another great instructional video. You might make machinists of some of us eventually.

[@mohabatkhanmalak5314]

Thank you so much, an excellent tutorial. I like how you present theory and how it all works. For students its so important and stays with them for a lifetime.

[@MathieuThomachot]

Thank you Marc for this great explanations. Very helpful to me, as I am starting making chips on my lathe. I also like the end of the video. I also make videos and it is good to know I am not the only one to take so many cuts before getting it right 😄

[@SP_Hatter]

Excellent video, new subscriber!!!!! Really great information for me being new the the machining hobby. Thank you.

[@xfire301]

Thank you for the clear presentation, starting with theory. Would you comment on machining plastics, please.

[@THATLAZYMACHINIST]

Hi Bruce! There are many types of plastics and the cutting angles change from one to the other. I will try to talk about it in part two of this video but in the meantime here is a video I produced as an introduction to polymers and their properties. I hope this helps, Marc kzbin.info/www/bejne/h5KagGNmaciNfpI

[@xfire301]

THATLAZYMACHINIST That was a very helpful presentation. I am machining 75 durometer urethane round bar on a lathe. I think that would be classified as an elastomer. Positive angles with lots of relief, but slow enough to keep cool and with mist coolant is the right approach?

[@mosampatel2718]

Good video👍👍👍👍

[@JimmysCanal]

Another great instructional video, thank you Marc!

[@THATLAZYMACHINIST]

Thanks Dimitris! I hope that all is well? Next fall I am visiting France, the trip after that (2019) should be Greece, it would be great to shake your hand speak with you face to face. Marc

[@JimmysCanal]

Things are more or less the same. I’m working on some projects right now; this helps me to keep my mind cleared and a bit away from worries and problems. It’s great to hear that you planning a trip to Greece. I'm looking forward for the day to see you and shake your hand, my friend!! All the best Dimitris

[@rickbrandt9559]

Informative!

[@shinli1961]

Dear Marc, thank you very much Lesson: 43

[@johnc4352]

While I enjoy watching a shop video where a machinist takes us through the steps of fabricating a part, this type of video, where you show us the theory and science of what is really going on is much more valuable. Thank you. P.S., how did you sneak back into your old shop to make this vid? : )

[@THATLAZYMACHINIST]

Hi John, blue screen is great since I no longer have access to a large shop. How did you like the voice over part? Now there is something that is hard to do. I now have a lot more respect for actors who do that type of work for a living. Thanks for watching and for the encouragement, Marc.

[@firearmsstudent]

"Too high of a cutting speed will produce an inherent lack of intelligence" LMAO Great video, I'm having issues getting a good surface finish when cutting on my 10x20 lathe so trying to dial in the variables.

[@MrShobar]

Excellent. Many thanks.

[@armdaMan]

Hello there TEACH from sunny South Africa Been reading up as much on this jargon which only now makes complete sense 'cos of the simple and practical way U have explained it. Although we do not use HSS ground Cutters on our Lathe, we reckon the principles would apply equally as well with our Carbide Inserts. Now it would be nice if U could explain the Number designations on these Carbide Inserts for one to be able to differentiate between the various Angle Rakes. Only hope U have time to peruse through this. TIA ATB aRM

[@CarlosContreras-gk9gp]

you are great!

[@deemstyle]

I thought this was fantastic up until the actual demonstration. As a newbie, I could easily follow the diagrams about positive, neutral, and negative cutting angles. But when you showed the three cutting tools- they sure looked exactly the same to me. A top down view of how the cutter hit the material would have driven the point home. Thanks though- this was really informative!

[@Rusty-Metal]

Good God you know so much.

[@johnstark6535]

Marc, What materials are considered soft, hard, and in between? I would think plastics would be a softer material and use a positive angle tip

[@steveu235]

Is that a Tos mill I see in your shop?

[@voidfalse]

I get the built up chips. Looks like it's time to replace the insert

[@JohnSmithZen]

I was reading a web page about machining dry (no lubrication) can anyone tell what they meant with this phrase "dangerous chip tangles"? What is a dangerous chip tangle?

[@CarlosContreras-gk9gp]

you are awesome

[@THATLAZYMACHINIST]

Thanks Carlos! Awesome and attractive, that's how I like to think of myself. I'm not sure about the attractive part though but since my eyesight isn't as good as it use to be, I find that I am looking good!!! Marc

[@jorgeaugustobaudemont1861]

I do appreciate your information Marc, It's very valuable. I normally watch yours videos hanging myself upside down from the ceiling. Thank you from Australia!

[@THATLAZYMACHINIST]

Don't do that! It's much to dangerous! It would be safer to turn the screen upside down. Marc

[@jorgeaugustobaudemont1861]

THATLAZYMACHINIST xo xo was so simple thanks again mate!

[@chrisstephens6673]

Re the out takes, there times when you just have to stop for a coffee and a deep breath.

[@kimberlycabanas2496]

Did you mean to say shiny exterior and dull interior? Because that's how it looks on screen.. at least to me.

[@ianbertenshaw4350]

You know you are doing something wrong when the chip starts spiralling out of the lathe and stars chasing you across the shop !

[@firearmsstudent]

Too high of a cutting speed will produce an inherent lack of intelligence lol

[@imysteryman]

Another great video. thanks.