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Thread: Making Large "Turner's Cubes" on an Engine Lathe

  1. #97
    Gold Member BobWarfield's Avatar
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    Eric, so glad to see you're getting back into the shop a little bit. I'm sure most of us wish we could be as productive on an hour a day!

    Your cube display looks magnificent. Be sure to put a little spot light nearby. The reflections on the ceiling and the rest of the room should be mesmerizing.

    Best Regards,

    Bob Warfield

    Try G-Wizard Machinist's Calculator for free:
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  2. #98
    Member widgitmaster's Avatar
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    Thanks Bob!
    Its good to be back on the Zone, instead of lurking around in silence!
    Eric



  3. #99
    Gold Member pete from TN's Avatar
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    Default Hey Eric.....

    That there is super cool I don't car who you are....!! Very nice work man. Someday I will get around to trying to make one of those cubes... Really neat.

    Peace

    Pete



  4. #100
    Member widgitmaster's Avatar
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    Well it took me a while to do it, but I made a little transmission to make the cube spin!

    First I made a black Delrin block that bolts on the bottom of the upper plate, and bored a 7/8" dia cross hole. Next I made a slide out of 303-SS, that fit nicely in the bore. After winning a 56-RPM gear motor that runs on 3-VDC, I bored one end of the slide to fit the motor. Then I made an extension spindle which has two bearings, two spacers, one nylon bevel gear, and a hole with a setscrew to attach it to the motor's shaft.

    Then I turned the outside ends of the slide to .75" dia, and made two clamps with long arms. Next I made two 303-SS buttons with 6-32 UNC threads on one end, so they can screw into the long arms of the clamps.
    One of the buttons has a 3/64" radius groove, which will trip the micro switch and turn the motor on!

    The reason for the over complicated gear box, is that for everyone I had shown my project to, they all smacked one point of the cube to get it spinning! Well, those little nylon gears would not last very long, as the power ratio at 2" from the cube's centerline is more than the little 3/8" OD gear can handle!

    So I devised a mechanism which engages the gear as it powers up the motor, and puts the cube in free wheeling mode when power is off!

    Now I have ordered two single "C" battery holders, and will have to wait for their arrival before I hog out the inside of the wood! It would be nice to be able to remove a cover plate from the bottom to replace the batteries, so I will try to think something up!

    Here is a nice movie of the spinning cube:
    VIDEO

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    Making Large "Turner's Cubes" on an Engine Lathe-100_1233-jpg   Making Large "Turner's Cubes" on an Engine Lathe-100_1234-jpg   Making Large "Turner's Cubes" on an Engine Lathe-100_1235-jpg   Making Large "Turner's Cubes" on an Engine Lathe-100_1237-jpg  

    Making Large "Turner's Cubes" on an Engine Lathe-100_1238-jpg   Making Large "Turner's Cubes" on an Engine Lathe-100_1239-jpg   Making Large "Turner's Cubes" on an Engine Lathe-100_1240-jpg   Making Large "Turner's Cubes" on an Engine Lathe-100_1241-jpg  



  5. #101
    Registered cnc_swe's Avatar
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    Default help on the way with the cube

    Your cubes seems pleasant to make. I do not find the original estimate, how do I do this? I think of the circles size relative to depth.
    Is there a complete G-code to a size of about 75-50mm.
    would be fun to try the steel before I buy home acrylic.

    I'm lazy because I'm over fifty years old



  6. #102
    Member widgitmaster's Avatar
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    Default Re: Making Large "Turner's Cubes" on an Engine Lathe

    Wow, It's been a long time sense I've posted on this thread!
    So here is a little update!

    Many of my friends have been asking me to make more of the tiny Turner's Cubes, so I squared up a bunch of scrap plastic stock and dug up the old fixture! These cubes are .7500" x .7500" x .7500" Delrin.




    Attached Thumbnails Attached Thumbnails Making Large "Turner's Cubes" on an Engine Lathe-turnerscubes_006-jpg   Making Large "Turner's Cubes" on an Engine Lathe-turnerscubes_005-jpg   Making Large "Turner's Cubes" on an Engine Lathe-turnerscubes_004-jpg   Making Large "Turner's Cubes" on an Engine Lathe-turnerscubes_003-jpg  

    Making Large "Turner's Cubes" on an Engine Lathe-turnerscubes_002-jpg   Making Large "Turner's Cubes" on an Engine Lathe-turnerscubes_001-jpg  
    www.widgitmaster.com
    It's not what you take away, it's what you are left with that counts!


  7. #103
    Member neilw20's Avatar
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    Default Re: Making Large "Turner's Cubes" on an Engine Lathe

    Holy cr4p!

    Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. THREE ways to fix things: The RIGHT way, the OTHER way, and maybe YOUR way, which is possibly a FASTER WRONG WAY!


  8. #104
    Member widgitmaster's Avatar
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    Default Re: Making Large "Turner's Cubes" on an Engine Lathe

    Quote Originally Posted by neilw20 View Post
    Holy cr4p!
    Sorry I woke you Neil
    Widgit



  9. #105
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    Default Re: Making Large "Turner's Cubes" on an Engine Lathe

    That's OK. Daylight saving just finished so the clocks are fixed but the brain is still adjusting. I will make some cubes, one day, when I find some time.

    Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. THREE ways to fix things: The RIGHT way, the OTHER way, and maybe YOUR way, which is possibly a FASTER WRONG WAY!


  10. #106
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    Default Re: Making Large "Turner's Cubes" on an Engine Lathe

    Here is a better video!






  11. #107
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    Default Re: Making Large "Turner's Cubes" on an Engine Lathe

    J8



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Making Large "Turner's Cubes" on an Engine Lathe

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Making Large "Turner's Cubes" on an Engine Lathe