Stub Mandrel | CNC Machining

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  • เผยแพร่เมื่อ 1 ก.พ. 2025

ความคิดเห็น • 110

  • @jimsvideos7201
    @jimsvideos7201 ปีที่แล้ว +6

    I adore the simplicity of the concept and the elegance of the manufacture of these.

  • @bostedtap8399
    @bostedtap8399 ปีที่แล้ว +6

    Excellent work Chris, using banding is a good idea, normally ive seen metal straps between the segments, Ive built a de-coiler once, a lot smaller though.
    Extension tool holder's were definitely needed that day, love the vibration damper "Thing" 😮.
    Drawing looked good, plenty of notes go aide in machining and build.
    Thanks for sharing

  • @BruceBoschek
    @BruceBoschek ปีที่แล้ว +1

    Love that lathe! Thank goodness for shim stock. :-) Thanks for another fascinating video, Chris. Hope your Sunday is peaceful.

  • @warrenjones744
    @warrenjones744 ปีที่แล้ว +3

    Nice turning job an interesting part Chris. Herring bone gears are a work of art!

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      Yes, they are! Too bad I have never seen how they make them, only youtube videos.

  • @gwharton68
    @gwharton68 ปีที่แล้ว +5

    Great video. The vibration damper is very smart. At least you don't have to worry about long stringy chips.

  • @bkoholliston
    @bkoholliston ปีที่แล้ว +8

    Man those tool holder extension blocks are something else! Especially with the added damper. I would have thought you needed a bigger lathe for sure. Very cool to see. Also 4x40 always look so great when you are done.

  • @scania357
    @scania357 ปีที่แล้ว +3

    Nice job Chris, that expanding mechanism looks like some tricky matching work. Thanks for sharing.

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Thanks 👍

  • @andrewtetley3883
    @andrewtetley3883 ปีที่แล้ว +4

    Great work Chris as always I never got to work on anything so big, we did small end hydraulic stuff. I have to tell you that I got so frustrated through the video….. the drawings kept popping up and I just wanted to spend time looking at them I was they to expand them several times so I could get a better look 🤣🤣🤣🤣🤣🤣
    Keep it coming Chris love your videos and the work you do!!!

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +2

      I'll try to include more drawings in the video. It's just that some customers are more strict about it than others.

  • @magaraoleandro
    @magaraoleandro ปีที่แล้ว +1

    Rare wisdom nowadays! Congrats.

  • @Donkusdelux
    @Donkusdelux ปีที่แล้ว +2

    When the extensions come out, that is when you can tell a rigid machine from the rest haha.
    great work Chris!

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +2

      Yeah, can't complain about the riggity of this lathe.

  • @mftmachining
    @mftmachining ปีที่แล้ว +4

    Man, Chris, this was excellent. Creativity at its best. I wouldnt have the guts to try such a setup. Hats off. 👍👍👍👀👀👀

  • @rubisbiker4482
    @rubisbiker4482 ปีที่แล้ว +1

    Quand on voit l encombrement et la masse de la pièce on se demande comment il va la serrer et la centré et finalement les contraintes d usinage dû au chocs et au déport sont maîtrisés à merveille.

  • @mattiasarvidsson8522
    @mattiasarvidsson8522 ปีที่แล้ว +1

    ppl like you deserve the highest salary in any machine shop.. :)

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      I wish!😅

    • @MrKotBonifacy
      @MrKotBonifacy ปีที่แล้ว

      @@ChrisMaj Forward this comment to da boss... ;-)

  • @cyclingbutterbean
    @cyclingbutterbean ปีที่แล้ว +2

    Beating the shit out of the inserts with that interrupted cut. Well done Chris!

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      Yeah, the machine didn't like it either 😅

  • @swanvalleymachineshop
    @swanvalleymachineshop ปีที่แล้ว +3

    Great set up & result . I bet the dimensioning on the drawing would have had to had a second glance with the open & closed dimensions ! Cheers 👍

  • @sicstar
    @sicstar ปีที่แล้ว +3

    Nice work! Love that girthy toolholder extension and yeah ... The shim-plate in the live center, been there done that lol... Can be sketchy af, especially with heavy parts like that but more if you have ones that are unbalanced or take a too heavy of a cut. You are very aware what could happen and gonna have an extra eye on it so all gucci there.
    Peace! And good job!

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      Yeah, you have to watch that shim cause it tends to move around sometimes.

    • @MrKotBonifacy
      @MrKotBonifacy ปีที่แล้ว

      _"Love that girthy toolholder extension"_ - Curtis from CEE Australia has got a longer one... I mean, "extension" of course ;-)
      A monster boring bar from down under tthat never gets boring: Making a BIG Boring Bar, th-cam.com/video/xjNHjjanehc/w-d-xo.html

  • @tokar035.70rus
    @tokar035.70rus ปีที่แล้ว +1

    Отличная работа 👍👍👍🇰🇬🇰🇬

  • @markfiges999
    @markfiges999 ปีที่แล้ว +1

    Nice job Chris, and again it was'' Kelly Bar City '' 😎😎😎...... as for those who didn't like your method of getting over runout, perhaps they'd like to post their solutions??

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Sometimes, that shim can make things even worse if you don't keep an eye on it. It tends to move around on you.

  • @romanbeck1983
    @romanbeck1983 ปีที่แล้ว +1

    Great work, great video.

  • @markanthonysmith413
    @markanthonysmith413 ปีที่แล้ว +1

    Another great job Chris.👍

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Thanks again!

  • @charlesblanton1008
    @charlesblanton1008 ปีที่แล้ว +4

    Although designed differently, this looks like what we would call a pay-off reel mandrel where I work. One comes into each side of coil to support while being run through a process, temper mill for example. Just curious if that is the case here and you had a pair of these to do (?). Great work, always interesting to see the machining of the types of components that I install as a millwright. 👍🏻

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      Yeah, it's a slitting line-payoff reel.

  • @stevechambers9166
    @stevechambers9166 ปีที่แล้ว +2

    That was very impressive you do some incredible work 👍👍👍

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Thank you! Cheers!

  • @paulcooper2897
    @paulcooper2897 ปีที่แล้ว +1

    Wow! A lot of side loading in the carriage!!! Impressive!

  • @465maltbie
    @465maltbie ปีที่แล้ว +1

    I am pretty impressed with the insert, considering the overhang and the interrupted cut...Charles

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      They worked surprisingly well.

    • @465maltbie
      @465maltbie ปีที่แล้ว

      @@ChrisMaj Would you care to share what grade of insert? Charles

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      @@465maltbie kennametal KC9125

  • @lancer2204
    @lancer2204 ปีที่แล้ว +4

    Your methods worked, you hit spec. The rest can cry all they want.

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      Yeah, it worked, but don't expect to hit some tight tolerances with that shim.

    • @DeadlinePhil
      @DeadlinePhil 11 หลายเดือนก่อน

      how does the saying go ? " it ain´t stupid if it work´s"

  • @paulmace7910
    @paulmace7910 ปีที่แล้ว +4

    Nice work. Thanks.

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Thanks for watching!

  • @zoltannagy1813
    @zoltannagy1813 ปีที่แล้ว +22

    Nice work on a tricky job... excess tool stick-out and intermittent cuts not making it any easier. Well done Chris.

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Thanks 👍

  • @CraigLYoung
    @CraigLYoung ปีที่แล้ว +3

    Thanks for sharing 👍 dang! How much does the center alone weigh?

  • @manishkainth95
    @manishkainth95 ปีที่แล้ว +2

    Ur Idea is amazing to have small shim ❤ in centre

  • @azietxu5779
    @azietxu5779 ปีที่แล้ว +2

    Detrás de estas imágenes hay mucha experiencia...💪👍

  • @peterdupont7559
    @peterdupont7559 ปีที่แล้ว +2

    Just love that "anti vibration thingy".

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      Patent pending 😅

  • @andrden6440
    @andrden6440 ปีที่แล้ว +1

    Very nice surface finish ❤

  • @subdude2013
    @subdude2013 ปีที่แล้ว +1

    AWESOME, WELL DONE!

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Glad you liked it!

  • @pulsenpal7882
    @pulsenpal7882 ปีที่แล้ว +1

    did you crimp steel strapping off workpiece to a precision diameter--then slip on when turning?

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      I've put them on the machine to prevent any play

  • @465maltbie
    @465maltbie ปีที่แล้ว +1

    It looks like you used several different extension blocks? Charles

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      For each diameter, I had to use different extension.

    • @465maltbie
      @465maltbie ปีที่แล้ว +1

      @@ChrisMaj Just setting the zero on all those different tools and getting everything to stay true must have been difficult. With those extension you couldnt use the same point for part zero. Your skill is impressive. Charles

  • @bhekidlamini51
    @bhekidlamini51 ปีที่แล้ว +1

    Beautiful work

  • @johnboforsyth5970
    @johnboforsyth5970 11 หลายเดือนก่อน

    What is something like this used for? Good work as always.

  • @tricolorbart1980de
    @tricolorbart1980de ปีที่แล้ว +1

    Did you build the holder extension yourself or were they purchased parts? In any case, your video is very interesting and exciting. How many cnmg plates did you use on the segments?
    nice greetings from Germany

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      All made in the house a long time ago. If you find the right insert for interrupted cuts, they last surprisingly long.

  • @Kamil_Klukowski
    @Kamil_Klukowski ปีที่แล้ว +1

    O matko, dawno nie był czegoś tak spektakularnego. Co to, jakieś sprzęgło odśrodkowe od piły? Ile mogło ważyć to "berło"? Na Porębie ciężko te promienie pewnie byłoby zrobić?

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      To coś tam ma wspólnego z rozwijaniem, czy zwijaniem blachy. Dokładnie, promień na promieniu, ale jak powiesz że trochę za duże na twoją maszynę, to powiedzą że może jakoś zrobisz, bo ja qrwa jestem magikiem.🤣

    • @MrKotBonifacy
      @MrKotBonifacy ปีที่แล้ว +1

      @@ChrisMaj "Niemożliwe robimy od ręki, ale na cuda trza parę dni poczekać", jak to mówią...

  • @proyectosycnc
    @proyectosycnc ปีที่แล้ว +1

    excelente trabajo

  • @aland7236
    @aland7236 ปีที่แล้ว +2

    11:52 Modern problems require modern solutions. I mean if it works lol. 😂

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      Patent pending 😅

    • @aland7236
      @aland7236 ปีที่แล้ว

      ​​@@ChrisMajWhen I was a teenager I had a 98 Honda Accord, and being a teenager I wanted more faster. I found a brick sized iron (possibly) weight bolted to the front subframe of the car at some weird angle and took it off because less weight is better right. It took me too long of a time to figure out why it was there at all. 😂

  • @frankd3024
    @frankd3024 ปีที่แล้ว +2

    11:54 Vibration absorber, best engineering 😁

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Redneck Vibration-dampening thing 😅

  • @jameswood9764
    @jameswood9764 ปีที่แล้ว +1

    Need a counter weight on other side of tool post to Offset long reach adapter?

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Yeah, maybe it would've helped, but it worked ok

  • @jaca2995
    @jaca2995 ปีที่แล้ว +1

    Ja piernicze ale robota, chylę czoła, pracuję na maszynach konwencjonalnych i podziwiam Pana pracę ;). Gdzie Pan pracuje?

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Za wielką wodą, przedmieścia chicago.

  • @nono-qh6sk
    @nono-qh6sk ปีที่แล้ว

    Dude, i cant believe the tolerances you have to work with. I saw .001-.002??? Thats nuts! I wouldve thought with something ao big you should have more wiggle room.

  • @anthonypoltes7413
    @anthonypoltes7413 ปีที่แล้ว +1

    Now that's a micrometer, holy cow!

  • @Cosmobrosomething
    @Cosmobrosomething 7 หลายเดือนก่อน +1

    Now that's a machine shop

  • @李亮哥
    @李亮哥 ปีที่แล้ว +1

    做的好,加工這類的成品最損刀具了,做的很完美

  • @Grantherum
    @Grantherum ปีที่แล้ว +1

    at least with this part, you don't have to worry about stringy chips... that interrupted cut takes care of it all for you.

  • @shoppy00
    @shoppy00 ปีที่แล้ว +1

    great!

  • @wmitchell51
    @wmitchell51 ปีที่แล้ว

    This shop looks familiar to me, is this in Tomball?

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Chicago suburbs.

  • @Nossdreal
    @Nossdreal ปีที่แล้ว +1

    HANDSOME GUY!!!

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Stop it. My wife reads the comments. 😅

    • @MrKotBonifacy
      @MrKotBonifacy ปีที่แล้ว +1

      @@ChrisMaj On the other hand, that will make her aware of the competition and (hopefully) make her rethink her matrimonial complacency ;-)

  • @TheBonnetq
    @TheBonnetq ปีที่แล้ว

    How do you get your metal bands so tight?

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Manual tensioner.

  • @lwilton
    @lwilton ปีที่แล้ว +1

    At least you didn't have to worry much about long stringy chips!

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Not on this job 😅

  • @BMan100
    @BMan100 9 หลายเดือนก่อน

    that tool holder extension looks like it's been sitting in the back for some time.

    • @ChrisMaj
      @ChrisMaj  9 หลายเดือนก่อน

      Yeah, it's for a special occasions only.

  • @TL....
    @TL.... ปีที่แล้ว +1

    tak jest

  • @KSMechanicalEngineering
    @KSMechanicalEngineering ปีที่แล้ว +1

    Nice machine

  • @renatocesar8399
    @renatocesar8399 ปีที่แล้ว +1

    Trabalho impecável. Principalmente o dispositivo antivibraçao 😂😂😂😂

  • @hinz1
    @hinz1 ปีที่แล้ว +1

    Would be quite a bad crash, if that steel band had ripped apart ;-)

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      It wouldn't really fall apart. It just has a little play in it, and that keeps it tight.

  • @ChanghongMetal
    @ChanghongMetal ปีที่แล้ว +1

    Marvelous1

  • @erikslagter3231
    @erikslagter3231 ปีที่แล้ว +1

    oh man those wooden pallets at the lathe are giving me the creeps.. One wrong step and you're out for a week..

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      The space between me and the machine behind me is a bit tight, and they have to squeeze in with the forklift. Every time I would replace the pallet, he would crash into them,so I was like "fuck it"

  • @LOOKATTHISRAFFF
    @LOOKATTHISRAFFF ปีที่แล้ว +1

    And now make a mistake, I don't even want to think what those losses would be

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      Let's not go there 😂

  • @mikeb1520
    @mikeb1520 ปีที่แล้ว +2

    You work on some of the weirdest $hit. I thought I worked with unusual machines during my career, but I don’t think I have seen anything remotely like what you seem to come across on a weekly basis.

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว +1

      I think that's why I'm still here in this shop (27 years). All this different shit they throw at me, 😅

  • @Michal_Sobierajski
    @Michal_Sobierajski ปีที่แล้ว +1

    Mam wrażenie, że nie potraficie robić łatwych detali :D

    • @ChrisMaj
      @ChrisMaj  ปีที่แล้ว

      Przynajmniej się nie nudzi.