29 Comments

  1. Making Stuff
    March 23, 2020 @ 5:16 pm

    What do you guys think about it so far? Let me know what you think. Check out this review I made on that mega sized closed loop stepper motor. https://youtu.be/SoRdEAm1auk

    Reply

  2. Alex Galvis
    March 23, 2020 @ 5:16 pm

    This guy is a genius!

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  3. James Peng
    March 23, 2020 @ 5:16 pm

    Such an underrated channel

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  4. Carr Grienier
    March 23, 2020 @ 5:16 pm

    That thing is going to have some torque. Great design and cant wait for the next video!

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  5. Gutorov Mike
    March 23, 2020 @ 5:16 pm

    Are you planing to use 2 motors on long axis? i think you have to push from both sides considering the with of the table

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  6. Bakir Kamel
    March 23, 2020 @ 5:16 pm

    awsome work and awsome video i really enjoyed it and want to learn more so that a can build mine. that would be cool if you could share withus some books that you think might be useful to learn cnc dimentionning and calibration. hope you all the best

    Reply

  7. Nuts and Bolts
    March 23, 2020 @ 5:16 pm

    How do you plan on dealing with backlash on the rack? Also, are you concerned that with the hinge design that the pinion might want to jump out of the rack on one direction and bite in going the other?

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  8. LaserFalcon
    March 23, 2020 @ 5:16 pm

    How did you determine the gear reduction ratios?

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  9. Hamid sadra
    March 23, 2020 @ 5:16 pm

    What type and pith pulley do you used? And the spring look too wick for the job

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  10. Lorenn Fields
    March 23, 2020 @ 5:16 pm

    Great video… can't wait to see the next steps unfold. I plan on implementing some of your design ideas in my ow. Large format cnc. Thanks for sharing!

    Reply

  11. Keith Brigadier
    March 23, 2020 @ 5:16 pm

    No suggestions just enjoying the build process.

    Reply

  12. WaldvogelReview
    March 23, 2020 @ 5:16 pm

    On the MPCNC, have you considered using a 3 or 4 flute cutter? The additional cutters at a slower speed should accomplish something somewhat similar to a 1 or 2 flute endmill at faster speeds.

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  13. VISHAL DODIYA
    March 23, 2020 @ 5:16 pm

    I am newbie at this and I have a question, why would be issue if you used direct drive and not the reduction? any specific purpose?

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  14. 40mick
    March 23, 2020 @ 5:16 pm

    Was asked already but, you didn't answer. The gear reduction is needed for a router so the motors don't lose torque or stall which loses steps. With Plasma, you can get away with it because you are only moving the gantry. Yes?

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  15. James Bradwell
    March 23, 2020 @ 5:16 pm

    ​ If you find that the plywood parts don't hold up then MDPE (the stuff good quality commercial-grade chopping boards are made from) is a good middle-ground.
    Or even UHMW if you can get it for the right price.

    It's stiffer and more dimensionally stable than wood, easier to machine than aluminium.

    In some places it'll be good enough that half the time you won't even need to exchange it for metal parts.

    I keep a stack of 1/2" chopping boards around for just this sort of thing (got a job-lot cheap from restaurant liquidation sale).

    …I still use ply for templating though.

    Reply

  16. paul wyleciol
    March 23, 2020 @ 5:16 pm

    I think the spring should be much stronger, Sir

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  17. sketchaus
    March 23, 2020 @ 5:16 pm

    Enjoying the build! Looks like the spacers will interfere with your spring tensioner screw.

    Reply

  18. Ryan Imlay
    March 23, 2020 @ 5:16 pm

    How accurate do you anticipate the final router to be. Are we talking plus minus 1/8"th1/16"th or .010"? Would direct drive stepper motors be more accurate? I am enjoying the build.

    Reply

  19. Davo453
    March 23, 2020 @ 5:16 pm

    Loving the closed-loop steppers I have never used them in any of my many builds so I am very interested to see how that goes. I may be wrong but I can't see that there is going to be near enough tension in that spring holding the pinion onto the rack but time will tell I guess. Its a bit late now but helical rack is much smoother if you can find it. All good work though.

    Reply

  20. Allan
    March 23, 2020 @ 5:16 pm

    Hope the play there would be minimal. Looks good so far.

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  21. mr resalah
    March 23, 2020 @ 5:16 pm

    very nice cnc but helical rack and pinion is smoother.

    Reply

  22. gizmo bowen
    March 23, 2020 @ 5:16 pm

    Very nice project, even if I don't think I'll ever build one. The MPCNC though looks like something that would be fun and within my abilities. Keep up the good work.

    Reply

  23. Others
    March 23, 2020 @ 5:16 pm

    I love the stuff you make – very imaginative and plenty of thought put it. The ply pieces that you plan to replace with aluminium, could just be laminated in (2mm?) aluminium that the router table should be able to route. Gluing and screwing the sheet on both sides of the parts should give you the rigidity of the solid aluminium parts, although they will be a little thicker.

    Reply

  24. TheBreaded
    March 23, 2020 @ 5:16 pm

    I'm assuming you're already intending to do this, but a flat head socket bolt will be better than using a cap head if you're counter sinking (especially into plywood). Also you may want to file slots for keys in those pulleys instead of using the grub screws into the key slots. It'll tighten the fit up a bit and be much stronger. You can still put a small indent on the stepper shaft for a grub screw. Oh, and washers would be good to use where you're bolting stuff to plywood. Minor things, I don't think any of that is necessary just my 2 cents.

    I like your project, keep at it!

    Reply

  25. Michael H
    March 23, 2020 @ 5:16 pm

    I just completed my first 4×2' cnc plasma last month and I should have just made a 4×8, I have heard the argument for gear reduction drives but so far my direct drive rack and pinion is working great with nema 23's and I have looked at a number of other commercial tables that are direct drive. With that said I like the spring design but I do remember watching another video where a similar spring function wasnt strong enough to hold tension on the gears at speed, I wonder if you could add some type of lateral limit to the flexibility of your spring design? Maybe only allow it to flex so much as to still maintain good contact. Anyway thanks for the videos, I look forward to the next!

    Reply

  26. minskmade
    March 23, 2020 @ 5:16 pm

    weird question…why didnt you just plasma you reduction part out?

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  27. minskmade
    March 23, 2020 @ 5:16 pm

    all cnc router builds start as a work bench 😛

    Reply

  28. Len Conrad
    March 23, 2020 @ 5:16 pm

    I will also make my parts in ply for debugging.

    Why NOT complete the 4×8 with ply parts, then use it to mill the alu parts?

    Reply

  29. R J
    March 23, 2020 @ 5:16 pm

    Like the spring design!

    Reply

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