Monarch 612 Lathe Restoration: Machining a New Lever Handle Bushing with a Square Broached Hole

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  • Опубліковано 10 січ 2025

КОМЕНТАРІ • 162

  • @donwilliams3626
    @donwilliams3626 10 місяців тому +6

    It is always amusing to watch someone that really can fit a square peg in a round hole!

  • @crazor01
    @crazor01 7 місяців тому

    Can't believe it's been seven years! Also after rewatching the first video in the series, I can't believe how good this machine looks. As do you, Keith!

  • @joeanon1415
    @joeanon1415 10 місяців тому +2

    I hope your weight loss is intentional and not the result of poor health. I noticed because the way you sound when you speak and breathe has noticeably improved. Congratulations and well done.

  • @scottvolage1752
    @scottvolage1752 10 місяців тому +21

    Ginger the shop supervisor. There for all aspects of inspections and advice.

    • @hectorpascal
      @hectorpascal 10 місяців тому +5

      Ginger is the ultimate cute photobombing pet!

    • @brand-x7049
      @brand-x7049 10 місяців тому +1

      Wonder where Marion is...

  • @diggerddawg
    @diggerddawg 4 місяці тому

    I work with machinists every now and then and hear them talk about how hard it is to find a good apprentice. Dang. I would've been all over a machinist apprentice job when I was a young man. When I graduated high school, I thought I wanted to be a mechanic but my Dad (God rest his soul) told me that the life of a mechanic was too hard on a fellow so he offered to send me to college. Several years later, I got a mechanical engineering degree, right in the middle of a recession, and entry level engineering jobs were hard to come by. So....I ended up working the last 40 years in.... (drum roll)......insurance. Wah, wah! LOL. I should've been a machinist!!!!! Maybe next go 'round I'll be a machinist with a wire EDM in my shop!

  • @PhilG999
    @PhilG999 10 місяців тому +2

    Lathe work has always been my favorite! Many years ago, I started a new Engineering job, and the "Model Shop" was right next to the Engineering department. The MS was "off limits" according to the sign. One day I had a little "personal" lathe project to do and went in and the lathe was barely bigger than a tabletop machine. 6' travel, about an 8" swing (if that). Thing was COVERED with chips and swarf! Before I did MY project, I cleaned that whole thing. The Chief Engineer came in just as I finished and looked at it and said: "Ok, you are now allowed in here."

  • @cmonster6
    @cmonster6 10 місяців тому +9

    I’m amazed there were no pesky burrs on that square shaft when you pulled the handle off 😊

  • @lobster8009
    @lobster8009 10 місяців тому +2

    I recon the "gasket lookin thing" was a wiper/oiler and it plays a fairly important role. Might get tight if chips get in there.

  • @paulputnam2305
    @paulputnam2305 10 місяців тому +3

    I’m a machinist,working in a machine shop, watching another machinist machining on his machine.
    Machiners Rock!
    That was fun! Thanks!

  • @permutatechguy
    @permutatechguy 10 місяців тому +6

    Seeing that square busing just slide on is so satisfying

  • @daleburrell6273
    @daleburrell6273 10 місяців тому

    14:12...PARTING IS SUCH SWEET SORROW-(?)
    (snucker-snucker-snucker!!!)

  • @polakis1975
    @polakis1975 10 місяців тому +4

    Cat has same concerns about the lathe😊

  • @DRNewcomb
    @DRNewcomb 10 місяців тому +8

    Just happen to have a 3/4" square broach. 😅

    • @kensherwin4544
      @kensherwin4544 10 місяців тому +4

      When you spend a lifetime collecting tooling, occasionally you oughta be able to "just happen to have" the tool you need. Not often enough that your wife can start spending the tooling budget, of course.

    • @craigtreleaven7560
      @craigtreleaven7560 10 місяців тому +1

      And a press with sufficient height to push it all the way through!

  • @amateurshooter6054
    @amateurshooter6054 2 місяці тому

    Thanks Keith

  • @petegraham1458
    @petegraham1458 10 місяців тому +2

    Nice fix , like you I don’t like equipment not to be functioning as designed, sooner or later lack of service and preventative maintenance and replacement of wearing parts causes a significant problem, better to attend to it .
    Thanks for the video!

  • @prillewitz
    @prillewitz 10 місяців тому +4

    The small things that irritate every day and make life so much more pleasant when resolved.

  • @johncloar1692
    @johncloar1692 10 місяців тому +3

    Thanks for the video Keith. It good to see shop jobs. Have a great week!!

  • @dannyl2598
    @dannyl2598 10 місяців тому +4

    Thanks Keith. It's nice to see your machine getting better and better. It will be as good as new without the new price.

  • @billdoodson4232
    @billdoodson4232 10 місяців тому +26

    Love the fact the shop cat comes to see what's going on.

    • @Scodiddly
      @Scodiddly 10 місяців тому

      I wonder if Keith films those bits just before feeding the cat. :)

    • @prillewitz
      @prillewitz 10 місяців тому +3

      You always have to check on your human so that they do nothing stupid.

    • @Hoaxer51
      @Hoaxer51 10 місяців тому +1

      @@prillewitz, That’s a full time job for some of them! Lol

    • @billdoodson4232
      @billdoodson4232 10 місяців тому

      @@Scodiddly 🤣😅🤣🤣

    • @user3141592635
      @user3141592635 10 місяців тому +1

      I like nice animals as well. I like cats, dogs and birds.
      However, among the dogs, I prefer the educactionally suited ones with great intelligence, and with a moderated agressivness, so as not to attack people for no accepted reason. For this reason, I prefer female German Sheperds, whom are generally nice and easy to train. Not that they are weak in the defence, but more easy to control.
      The bite in the arm is hard and painful in the play with sticks, should the dog miss and take a bite in the arm when you fint them.
      One mistake, a friends young girl made, was to draw the stick to her belly in the strife, so the dog catched her belly-skin in the bite of the stick. Just a nasty blue-mark and some whining. She witnessed though, the dog did not bite her on purpose, just a mistake.
      This female German Sheperd's greatest fun, was to stride and meter who was the strongest, fighting sticks back and forth, dragging.
      Sometimes I let her win. Her tail straight up in the air, head raised, trotting with great pride.

  • @walterplummer3808
    @walterplummer3808 10 місяців тому +5

    Good morning Keith. Thanks for the videos. Have a great weekend!

  • @djfaber
    @djfaber 10 місяців тому +1

    Hey Keith, just wanted to say, you're looking great these days!

  • @scottbishop7899
    @scottbishop7899 10 місяців тому +6

    Maybe should take a wire brush on a grinder to clean thar square rod and maybe dressed it up with a fine file while you were in there, then give it a good light lube to help prevent it rusting a bit (maybe could still do it as there's plenty room to get to it anyway lol).
    Every little helps 👍 👌

    • @danielbutler578
      @danielbutler578 10 місяців тому

      It's a lot easier to run a file over a small part than to mess around with that square rod and possibly cause other issues.

    • @scottbishop7899
      @scottbishop7899 10 місяців тому

      @@danielbutler578 I could see that if it was load bearing, intricate or if it was used for several operations but its just to turn it on or off/start or stop, I know you guys are all about 'patina" function over form sometimes? 😆 🤣 😂

  • @robertmcauliffe6989
    @robertmcauliffe6989 10 місяців тому

    25 of my 37 years in the aerospace industry have been in the machine shop environment. One thing that I have learned is the importance of “Clean As You Go”. I understand that you’re not building anything untra-precision, but… it’s just good practice. I think that you will find that you will not need a hammer so often 😊.

  • @edsmachine93
    @edsmachine93 10 місяців тому +2

    Nice work Keith.
    The Monarch is really turning into a Gem with all of these fixes and repairs you are doing.👍
    Thanks for sharing the process.
    Have a great day.

  • @waynephillips2777
    @waynephillips2777 10 місяців тому +2

    Thanks for sharing!

  • @mervynprice7009
    @mervynprice7009 10 місяців тому +4

    Very enjoyable watching the use of a square broach. I got the feeling that we may be seeing a forthcoming video about adjusting the bearings on the lathe you were using.

    • @peterhobson3262
      @peterhobson3262 10 місяців тому +2

      I remember the first time I saw a square broach being used and thinking: "So that's how you make a round hole into a square one."

    • @hectorpascal
      @hectorpascal 10 місяців тому +2

      Whoever invented the broach idea should have gotten a Gold Medal!

    • @brettbuck7362
      @brettbuck7362 10 місяців тому

      Yes, that looked rather alarming!

  • @jensschroder8214
    @jensschroder8214 10 місяців тому +1

    Fits and doesn't wobble!

  • @davidc6510
    @davidc6510 10 місяців тому

    Another great video fixing up the Monarch Lathe. Thanks for sharing,

  • @jackheritage2222
    @jackheritage2222 10 місяців тому

    Really nice repair. I always enjoy your explaining what you're doing. Thanks. ( and I like your cat)

  • @melshea2519
    @melshea2519 10 місяців тому +2

    Happy Friday Keith! 😊

  • @RRINTHESHOP
    @RRINTHESHOP 10 місяців тому +1

    I to have done this job a few times, well done.

  • @MikeBaxterABC
    @MikeBaxterABC 10 місяців тому +1

    Great Job Kieth!! .. I've had occasion to make square holes by slowly and carefully filing each corner, (after drilling) with one of my big square files, I'd probably choose brass for this job just to save filling time :)

  • @robandsharonseddon-smith5216
    @robandsharonseddon-smith5216 10 місяців тому

    Thanks. I enjoy the commentary even if I'm not paying full attention every time.

  • @MikeBaxterABC
    @MikeBaxterABC 10 місяців тому

    21:20 Great Fit, that will break in, in a week or so, no problem!

  • @geraldharkness8830
    @geraldharkness8830 10 місяців тому +2

    excellent job well done keith.

  • @elsdp-4560
    @elsdp-4560 10 місяців тому +2

    Thank you for sharing. Nice repair.👍

  • @ZigZagMarquis
    @ZigZagMarquis 10 місяців тому

    Keith, Ginger, like us, sure seems interested in this lathe restoration! She mush have some machine work in mind for you to do on her litter box once this project is done!??! 🤪

  • @richardmerrill4036
    @richardmerrill4036 Місяць тому

    The set screw-key is pretty cool but wouldn’t a simple spring pin work? The snap ring would keep it from working loose?

  • @robertbamford8266
    @robertbamford8266 10 місяців тому

    Interesting. If I ever have a question, you answer it, usually within the next 30 seconds of video. This time I was (idly) wondering why you didn’t show test fitting the unmounted, broached bushing by slipping it over the square shaft. This time the answer showed up in your adjustment toward the end. Thanks for the video.

  • @crsnowman
    @crsnowman 10 місяців тому

    Keith, give ginger a nice pet when she is trying to help out.

  • @levitated-pit
    @levitated-pit 10 місяців тому +3

    Dear internet mate Keith, From a fellow machinist/engineer type. Please give a brief summary about Ginger the cat, I am constantly puzzled/concerned about the fact that he`s still alive! In a workshop full of comfortable warm motors, drives etc how has he maintained a full length "question mark" tail? and why has he been denied steel toecap boots?

  • @alemurillo03
    @alemurillo03 10 місяців тому

    You know you are doing something good when the part you are turning says "right there"...!!!? 13:48

  • @SciPunk215
    @SciPunk215 10 місяців тому

    Great little project!
    The audio sounds great.

  • @TheAyrCaveShop
    @TheAyrCaveShop 10 місяців тому

    Nice repair Keith !

  • @WillyBemis
    @WillyBemis 10 місяців тому

    Thank you Keith! This was an interesting repair.

  • @bulletproofpepper2
    @bulletproofpepper2 10 місяців тому

    Absolutely fixed. Thanks for sharing.

  • @ianbrooks6816
    @ianbrooks6816 10 місяців тому

    Nice work Keith.

  • @marcellucassen8033
    @marcellucassen8033 10 місяців тому +1

    When I see someone pushing a broach trough a hole it always makes me nervous it will break, when I heard how expensive they are it only makes it worse.

  • @frankerceg4349
    @frankerceg4349 10 місяців тому

    Thank you Keith!

  • @jacquespoirier9071
    @jacquespoirier9071 10 місяців тому

    to perform such a job, you need to have on hand more than 1 machine
    very good job
    very good video

  • @brettbuck7362
    @brettbuck7362 10 місяців тому

    I think the fiber/leather washer is intended to be a wiper, to wipe crud off the square rod before it goes into the bushing, to keep it from wearing out so fast . It needs to be a tight fit or it packs it onto the rod.

  • @stevenclaeys6252
    @stevenclaeys6252 10 місяців тому

    Thank you for another great video. Cheers

  • @dwaynekoblitz6032
    @dwaynekoblitz6032 10 місяців тому

    We've got a brand new $65,000 large here at work and we can't use it "until testing is complete." Testing??? It's BRAND NEW??!! Ridiculous. Broaches are always satisfying to use. Well done.

  • @TomokosEnterprize
    @TomokosEnterprize 10 місяців тому

    Always a nice visit with you Keith. Little things like this really make a big difference.Having full sized broaches on hand is a real blessing. You nailed another one Kieth. I sure enjoy these visits. In all of the North of BC Canada. Kamloops to Fort Nelsonthere is not just one set of any kind of broaches to be had. There are few shapers as well. It is hard to imagine but that is just the way things are up here. Down south they are in every metal shop. Schools and profesional type outlets. Great to see this done and done right.

  • @danielmccann4055
    @danielmccann4055 10 місяців тому

    Great Work.

  • @commaux
    @commaux 10 місяців тому +5

    Hi Keith. Great content as usual. I was just a little bit concerned about the noise your green lathe is making. It sounds kind of rough. Chatter ? Weird since you seem like you were pushing it that hard.

    • @MrChevelle83
      @MrChevelle83 10 місяців тому +1

      ol green lathe has sounded that way forever and i stood beside him running it. the machine is rock solid.

  • @CornishMiner
    @CornishMiner 10 місяців тому

    A satisfying fix.

  • @Stefan_Boerjesson
    @Stefan_Boerjesson 10 місяців тому

    As always, well done a nicely presented. Not having such a broach, jungle methods a la Tubalcain had to be used....
    Time 17:35. No testing that it fits the 4 sided rod? Guees it was done and was positive.
    Time 20.47. We have the same hair style.... It's like a lighthouse when landing the drone.... Bright heads.....
    Time 25:16. What about the left handle? It's good or uninteresting?....

  • @danielelse3914
    @danielelse3914 10 місяців тому

    Very nice job, Keith.

  • @timziegler9358
    @timziegler9358 10 місяців тому

    Well done! I enjoy your videos. Best wishes.

  • @justinl.3587
    @justinl.3587 10 місяців тому

    The retention screw used to keep the bushing in place is called a “Dutchman” not a key.

  • @steveschwartz6138
    @steveschwartz6138 10 місяців тому +1

    Broaching always made me nervous. I had a couple splinter on me. Wouldn't putting a set screw through the handle to the bushing be easier than drilling and tapping a key directly into the bushing?

  • @timf6916
    @timf6916 10 місяців тому

    Good Job

  • @viniciusvbf22
    @viniciusvbf22 10 місяців тому

    New subscriber here. What a wonderful machine.

  • @richardsurber8226
    @richardsurber8226 10 місяців тому

    you have good video skills

  • @JohnfromEngland
    @JohnfromEngland 10 місяців тому +1

    Yes Kieth it is know as a Dutch key

  • @wesleymonske8103
    @wesleymonske8103 10 місяців тому +1

    Will you replace the other handle bushing at the lever at the motor end?

  • @brucet9799
    @brucet9799 10 місяців тому

    (Seeing it in action with the lathe on would have been nice)

  • @mikeschaefer9516
    @mikeschaefer9516 10 місяців тому

    Keith - may want to check the top left (if facing machine) of your press, the bolt and plate holding the table seemed to have a bit of play in relation to the throat the table is mounted on. 16:22 thru the end of the broaching process.

    • @danielbutler578
      @danielbutler578 10 місяців тому

      Any arbor press is going to have a slight amount of play in it. If it is too tight you will be dealing with too much friction. That's why you let the pressure off the broach frequently to prevent binding or breakage. Noticed that he was doing that and if you watch closely, you can see the broach move slightly when he released the pressure.

    • @mikeschaefer9516
      @mikeschaefer9516 10 місяців тому

      I noticed that too, Daniel, but it appears that the bolt has not pulled the table/plate up against the back of the throat. Was just mentioning it as something to check.

  • @masteruniverse3506
    @masteruniverse3506 10 місяців тому

    Is the sister lever on the left not in need of repair? I see it move up and down with the movement of the repaired lever?

  • @steubens7
    @steubens7 10 місяців тому

    wonder if it had been replaced twice already because they just tweaked the bushing but kept the same wiper plate

  • @iDuckman
    @iDuckman 10 місяців тому

    Aw. I was looking forward to learn how to borach a hole.

  • @jeffreysmith5018
    @jeffreysmith5018 10 місяців тому

    Ginger approved 😀

  • @wilsonlaidlaw
    @wilsonlaidlaw 10 місяців тому

    My guess is that that may be the original bushing but it has been turned twice to present a sharper square corner to the square clutch rod.

  • @bigun447
    @bigun447 10 місяців тому

    Channel's new name? The Keith and Ginger Show.

  • @garybrenner6236
    @garybrenner6236 10 місяців тому

    Is the Stoker Engine ever coming up?

  • @azlandpilotcar4450
    @azlandpilotcar4450 10 місяців тому

    The thumbnail shows the hole is "borached" , if true, it wouldn't be square! Good video, despite problems with my youtube.

    • @danielbutler578
      @danielbutler578 10 місяців тому

      If you have a good square broach it will be square. He's not using a broach for cutting a keyway.

    • @MrChevelle83
      @MrChevelle83 10 місяців тому

      tell us what "borached" is ?

  • @rjw8316
    @rjw8316 10 місяців тому

    Thanks once again Keith for an informative video. Looks like your lead hammer could use a little love or recasting. Also, how do you keep Ginger from jumping up on your machines while using them and keep her paws out of chips? Just curious. Thanks again.

  • @benjamindusseau4912
    @benjamindusseau4912 10 місяців тому

    was the original bushing bronze? easier to replace the bushing then the square shaft?

  • @robertlevine2152
    @robertlevine2152 10 місяців тому

    Keith,
    Would it help if you put an oversized hole in the bushing and then lined it with a UHMW, Turcite, or a reinforced PTFE material? This would help reduce friction and wear.
    Bob

  • @user3141592635
    @user3141592635 10 місяців тому

    Nice work as usual. I suppose such a broatch cost a great deal of money.

  • @tomswindler64
    @tomswindler64 10 місяців тому

    Nice 😎😎😎👍👍👍

  • @jasonhull5712
    @jasonhull5712 10 місяців тому

    Think I would have painted up my handle and cleaned up that shaft while in there. Makes that apron slide that much easier. On that old girl it’s a bit of a task moving that sucker from end to end. Get ya a good workout anyways ! Keith is going to be buff and strong by the end of summer ! 😊

  • @daleburrell6273
    @daleburrell6273 10 місяців тому

    1:24..."SQUARED AWAY"-(?)
    (snucker-snucker-snucker!!!)

  • @Airtight215
    @Airtight215 10 місяців тому +2

    I see Ginger almost every video but haven’t seen Mary Anne in a while. Is he ok?

    • @phlodel
      @phlodel 10 місяців тому

      I hope she's become a house cat, but 'm afraid something happened to her, I've asked a couple times.

  • @A.Hidell
    @A.Hidell 10 місяців тому

    Final proof you can put a square peg in a round hole !

  • @johnnosawyer6423
    @johnnosawyer6423 10 місяців тому

    Sorry Keith, that hand wheel on the tail stock still looks wired that way round.

  • @wyrdlg
    @wyrdlg 10 місяців тому +2

    Hmmm, new microphone?

  • @peterward2875
    @peterward2875 10 місяців тому +1

    I'm curious why you didn't make it out of bronze/brass again? Going with steel will wear out the square rod too, won't it? (The much more expensive to replace part.)

    • @ruben_balea
      @ruben_balea 10 місяців тому

      The old one was also steel, at a first glance it looked yellow but I think it was a layer of oil

  • @jameshatfield7634
    @jameshatfield7634 10 місяців тому

    Keith:It's not a leaver It's a lever.

  • @crystaldragon141
    @crystaldragon141 10 місяців тому

    It might not hurt to run your precision stones on the square bar and take of any high spots or buts.

  • @clivewilliams3661
    @clivewilliams3661 10 місяців тому

    Rather than persist with the grub screw lock to stop rotation, it would have been a simple broaching/milling exercise to resolve the defective design by creating a key way.

  • @a.bakker64
    @a.bakker64 10 місяців тому +1

    15:00 no backlash?

    • @garybrenner6236
      @garybrenner6236 10 місяців тому

      I saw that too, at around 15:22 you can see the work piece jump, also with that bearing noise, sounds like something is really loose in that headstock!
      He had a lot of stickout but that work piece really moved.

  • @Throughthebulkhead
    @Throughthebulkhead 10 місяців тому

    Sounds like you have a worn bearing in the Monarch??😮

  • @hinz1
    @hinz1 10 місяців тому +2

    I'd simply harden that bushing, like 100x less wear over time ;-D

    • @ericpaul4575
      @ericpaul4575 10 місяців тому +7

      Then the rod would wear. Which is easier to replace.

    • @littleworkshopofhorrors2395
      @littleworkshopofhorrors2395 10 місяців тому +1

      Knowing this piece is a problem, I would have been tempted to redesign the piece to be at least twice as long for increased life, even at the expense of very slightly reduced effective bed length.

    • @ellieprice363
      @ellieprice363 10 місяців тому +1

      Two ways the part could have been made more durable with less wear in the future. Machine from 4140 steel without hardening or case harden the finished part. 4140 is the better choice since case hardening tends to distort the part. However, the hot rolled part will probably last another fifty years with little appreciable wear so no real concern.

  • @richardmerrill4036
    @richardmerrill4036 Місяць тому

    Don’t you have to account for the width of the cutoff tool???

  • @bobmurphy6229
    @bobmurphy6229 10 місяців тому +1

    That Monarch appears to have two feed shafts - why is that- one for longitudinal and one for cross slide feed??
    Someone explain please.
    Bob (Edinburgh, Scotland).

    • @jasonhull5712
      @jasonhull5712 10 місяців тому +2

      Bob it has two “rotating shafts” one is for the power feeds of the apron, and the other is only for threading or “the half nuts” the third rod you are seeing is only for the headstock control switch which is what Keith is fixing here. It’s on a shaft that runs back up to the headstock so you can control the headstock from the apron or the headstock itself. On longer machines you Don’t want to have to walk up to the headstock to power up the machine and then walk back to the apron if turning on a long workpiece.
      Hope that clarifies your observation Sir.
      Have a great day.

    • @MrChevelle83
      @MrChevelle83 10 місяців тому

      i run a lathe 40 feet long and you explained it well.

  • @chrisjarvis4449
    @chrisjarvis4449 10 місяців тому

    it will wear in before it wears out

  • @nfa10
    @nfa10 10 місяців тому

    Can I ask a stupid question to the community? I've seen some videos here, and I haven't seen the use of liquid coolant during various processing, unlike other channels, what's the reason for that?

    • @MrChevelle83
      @MrChevelle83 10 місяців тому

      coolant is generally used to cool the part kieth done usually machine large heavy heat soaked parts and he uses insert tooling coolant is super messy and as someone that is fimilar with machining. his work dont really require coolant at the speed and feed hes working with.

  • @george-b3i-d2d
    @george-b3i-d2d 10 місяців тому

    Ginger kitty!!!