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OpenBuilds LEAD CNC Machine 1515 (60" x 60")

Discussion in 'CNC Mills/Routers' started by OpenBuilds, Sep 29, 2020.

  1. OpenBuilds

    Staff Member Moderator Project Maker Builder Resident Builder

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    OpenBuilds published a new build:

    Read more about this build...
     
  2. sharmstr

    sharmstr Master
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    Congrats, Team!

    I'm sure this question will be coming so I'll be the first to ask. Have you tested with the High Z mod?
     
  3. Mark Carew

    Mark Carew OpenBuilds Team
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    Thanks @sharmstr welcome back! :)
    Yes adding bigger sides should not be a problem for this monster!
    We like to keep it low profile for the 99% use case of sheet materials so it's as rigid as possible.
     
    stuart wallace, Rick 2.0 and sharmstr like this.
  4. Rob Taylor

    Rob Taylor Veteran
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    Nice! With so much machining space available, you should do a double-carriage Y version of the high-Z with A-frame extrusion, so that the extra leverage of the taller columns has opposing leverage on the actual rail holding it up. You'd lose an extra 6-10 inches of Y travel, but you'd have it in the X direction anyway.

    Depends how much deflection is within the high-Z beams' torsional deflection and how much is actually transferred to the Y-axis carriage wheels, but larger carriage footprint always = better.
     
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  5. Mark Carew

    Mark Carew OpenBuilds Team
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    That would be cool @Rob Taylor giving the best of both worlds!
    On the lower profile side of things we have so much strength you know we are working up cool mods for this one but that going to be a topic for another day ;)
     
  6. Rhett E

    Rhett E New
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    I just placed my order, now I need to figure out where to put it.

    The lead 1010 has the option for nema 23 high torque motors but the 1515 doesn't. My caveman brain tells me bigger is better so why does the 1515 not have the option for the high torque motors? Also, the 1515 stays with 8mm screws. I know all of this has been rigorously tested but that doesn't seem very beefy for a near 5ft run.
     
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  7. Giarc

    Giarc Master
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    SOMETHING BIG IS COMING!!

    This is awesome! I will assume that since I guessed right, I won one. You already have my shipping address. ;)
     
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  8. Metalguru

    Metalguru Veteran
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    I think it would benefit from using 40x40's for the front and back rail as well. It may be prudent to move the front and back rails inboard another 20mm so you can add cast corners on both sides of it, as well as a couple on the inside of the c-beams as well. IMHO, that is one of the major weak points of this design, there are only 2 little 8mm screws holding each end of the Y axis rail in place. The whole rest of the length is unsupported.

    Also, I never understood why you only used 8 wheels per carriage on the Y gantry plates, they are holding a lot of weight and all the cutting forces as well. At least you went with 6 wheels on the Z axis this time.

    Also, for the bed rails, it might be better to use 20x60's instead of 20x40's. This would make the bed a lot stiffer, and you could then put the spoil boards flush with the top of the rails. It seems to me that "hanging" the spoil boards from the 2 hole corner brackets would make it very difficult to get the bed level and flat.

    MG
     
    #8 Metalguru, Sep 29, 2020
    Last edited: Sep 29, 2020
  9. BCulbertson

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    This is what I have been waiting for. Why is the material list unavailable?
     
  10. sharmstr

    sharmstr Master
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    Parts list link isn't working, but you can view it by going to the Parts List tab above.
     
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  11. Mark Carew

    Mark Carew OpenBuilds Team
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    Thank you for your support @Rhett E :thumbsup: I know that you will love having this machine!
    As for the high torque option thank you for pointing this out, we are updating the Part Store options to reflect this and will contact you. The leads being locked in tension are performing very well and I will say though in all our testing the standard nema 23's have more than enough power to do the job.
     
    Rhett E likes this.
  12. Mark Carew

    Mark Carew OpenBuilds Team
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    sharmstr likes this.
  13. Mark Carew

    Mark Carew OpenBuilds Team
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    @Metalguru all good points. This is the really nice thing about the modularity of the system and this build in particular , it can always adapt to different needs and specs.
    Like Rob mentions above there are already some great ideas for mods and tweaks we can start working towards so we are excited to see what the community comes up with.
     
    Metalguru likes this.
  14. kifla2704

    kifla2704 New
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    I like this design very much! Two years ago I've built double C-Beam X axis CNC...it looked odd to me, so I never posted the build. Nevertheless here are some pics:

    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]

    As you can see it's a bit different than your idea and I have to custom cut X and Y plates for two profiles screwed together, but those two C-Beams are really something; pretty sturdy and realiable.
    Anyway, I like your idea better, it is easier to build with already available parts.:thumbsup:

    And PDF outlines of those plates, in case someone is interested

    Double_C_beam_X_Plates.pdf

    Double_CBeam_Y_Plate.pdf

    Greetings from Croatia!
     

    Attached Files:

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  15. Mark Carew

    Mark Carew OpenBuilds Team
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    That looks great @kifla2704 wow love the blue color too. Thanks for the kind words and the share.
    I have a very similar plate based design as well with the double C-Beam stacked but on this LEAD 1515 my focus is strength and modularity.
    We have some really cool ideas in the works for up and coming mods that we are itching to share so stay tuned.
     
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  16. jeffmorris

    jeffmorris Well-Known
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    I watched almost 3-hour "movie" about building the LEAD 1515 router. If an user is expected to assemble two or more sub-assembles such as gantry carts, just tell the user to rewind the video and assemble all of the gantry carts before going to next step.
     
    Mark Carew likes this.
  17. Mark Carew

    Mark Carew OpenBuilds Team
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    Good feedback @jeffmorris from our point of view especially with a new user we want to be sure that if you follow along with the build you are building right along with us and you will not miss a thing. That being said I see your point and see how we could omit or speed up some of these repetitive areas.
     
  18. jeffmorris

    jeffmorris Well-Known
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    I think that the Z-Axis travel is too short. What if you want to cut 3/4" thick wood on 1/2" thick spoil board using 1/4" bit and then cut 1/8" thick wood using 1/8" bit?
     
  19. Metalguru

    Metalguru Veteran
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    Huh? Says it has 2.5" cut depth above the spoil board, don't see a problem with what you postulated...

    In any case just make the side rails longer and you can get any height you want...

    MG
     
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  20. Brian Redbeard

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    The thing I'm interested in seeing is a table design for a beast this big. You're immediately looking at multiple sheets of for the top and for the bottom.
     
    Mark Carew likes this.
  21. Mark Carew

    Mark Carew OpenBuilds Team
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    @Brian Redbeard I almost posted a sneak peak tonight...but I can not.
    I can say we have one in the works, and it's huge and cool!
    p.s. will share as soon as we can because we are just as excited about this!!!
     
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  22. Mark Carew

    Mark Carew OpenBuilds Team
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    Hey guys a lot of you are asking if you can raise up the height of the Z for thicker materials and the good news is that the answer is yes.
    Because of the modular nature of the OpenBuilds system you can raise the Z height of your LEAD 1515 using the same process of adding taller sides as the High Z Mod.

    In the case of the LEAD 1515 its now even easier because everything for the rigidity is already in place! All that is needed are the 2 taller 20x80 (500mm) side columns to raise the height.

    So how it works is you would still follow along with the standard LEAD 1515 Build video as normal, but where the smaller (330mm) side columns are being used you would use the taller (500mm) ones in its place.

    We have included a couple pictures as well as a SketchUp 3D model in the Files and Drawings Tab


    If you do not have SketchUp you can download the free viewer in the link below 3D Modeling Online Free | 3D Warehouse Models | SketchUp

    If you would like to use SketchUp you can use the free SketchUp MAKE (2017) addition here
    PC - https://www.sketchup.com/sketchup/2017/en/sketchupmake-2017-2-2555-90782-en-x64-exe
    Mac - https://www.sketchup.com/sketchup/2017/en/sketchupmake-2017-3-116-90851-en-dmg


    We hope this helps take your LEAD 1515 to new heights! ;)

    Looking forward to seeing your builds and the projects you make on OpenBuilds.com
     
    Giarc likes this.
  23. Rhett E

    Rhett E New
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    Can router be lowered enough to use regular bits? Or even lower the carriage assembly if needed?
     
  24. Mark Carew

    Mark Carew OpenBuilds Team
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    @Rhett E Yes on this system you can lower both the router and/or the entire Z axis assembly to adapt to your application
     
    Rhett E likes this.

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