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FlashPoint CNC v1: 500mm x 1000mm 3-Axis CNC Router

Discussion in 'CNC Mills/Routers' started by Jay Almers, Jan 10, 2019.

  1. Jay Almers

    Jay Almers Well-Known
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    Jay Almers published a new build:

    Read more about this build...
     
  2. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    The C-Beam® Gantry Plate shown on the X-axis may not provide sufficient rigidity to prevent flexing of the Z-axis because of its narrow grip. I would suggest using one that grips the outer edges of the C-beam like the XLarge C-Beam Gantry Plate.
     
  3. arcrunner

    arcrunner Journeyman
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    If you use the xlarge c beam plate, you can face the x axis lead screw away from the cutting area
     
  4. Jay Almers

    Jay Almers Well-Known
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    Good call. I see your point. I think I will have the same problem with the Z axis. One thing I didn't include on the CAD drawing was I have a 250mm 20x60 V-Slot plate attached to the Z axis cart where the router will be bolted. I was hoping that would provide the rigidity needed. With this being v1, I am sure there will be many "ah-hah" moments.
     
  5. Jay Almers

    Jay Almers Well-Known
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    Wouldn't I need two XL Plates? One on the lead screw side with the anti-backlast nut and one on the back....essentially sandwiching the C-Beam?
     
  6. arcrunner

    arcrunner Journeyman
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    Yes, just like the LEAD machine.
     
  7. GrayUK

    GrayUK Openbuilds Team Elder
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    Twist, is the main enemy of the CNC. This is front and back movement from the tip of the cutter, running into the Z-axis, into the X-axis and then the Y-axis. An accumulative event which needs to be stopped, as best can be, at the Z-axis.
     
  8. Jay Almers

    Jay Almers Well-Known
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    If I were to purchase C-Beam XL plates, would I need 2 per axis? Or would a set on the X axis be sufficient?
     
  9. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Depends on the weight of the router.
     
  10. Jay Almers

    Jay Almers Well-Known
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    I have a Dewalt DW611. Do you think my setup is stout enough if I take shallow passes at slow speeds until I can raise the funds (trying to form non-profit) for the beefier plates?
     
  11. Jay Almers

    Jay Almers Well-Known
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    I have modified the XL C-Beam plate and C-Beam end plate to make a single unit for the Y-axis. I am thinking if I cut a set of these out, that will solve some excess parts issues and by mounting a XL C-Beam plate on the backside of the C-Beam to this arm, I should get that rigidity I am looking for. Thoughts?
     

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