Ming

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  • in reply to: 3D Scanning Services? #3906

    Ming
    Participant

    If you don’t find a place to do it, you could try the free version of David 3d scanner. It’s more limited then the Pro version (~$430) one but it’d probably work in a pinch.

    It outputs to stl, obj, and ply.

    in reply to: DIYLILCNC and Pinewood Derby #3862

    Ming
    Participant

    It’s possible to run Sketchup on Linux using Wine. I have no idea how stable it is but both Wine and Sketchup are free.

    http://wiki.winehq.org/GoogleSketchup

    in reply to: V2 Spindle/Cutting tool #3874

    Ming
    Participant

    Grumpygeek’s CNC uses a Ridgid R2400 and he was considering a DeWalt 660.

    Ridgid R2400

    20,000 – 30,000 RPM.

    6amp

    1/4″ collet.

    $100 on Home Depot.

    3lbs, roughly 3 times as heavy as a Dremel 300.

    DeWalt 660

    30,000 max RPM, no indication of having a speed dial.

    5amp

    1/8″ and 1/4″ collet.

    $60 on Home Depot!

    3.2lbs.

    in reply to: Z-Sled modification questions #3873

    Ming
    Participant

    Thanks for the information Chris! I was thinking of linear bearing blocks too after seeing it in Sly’s build. Sly used VXB, which looks like a good choice.

    Right now I’m trying to contact VXB in regards to some measurements for the 12mm bearing blocks because the Rhino model I built from the listed measurements looks like a flattened version of the actual bearing block. If I’m reading the measurements on that page correctly, the block should be 28mm tall and 42mm wide. Thus the height should be 2/3 of the width but the photos don’t convey those proportions.

    I’m emailing VXB about the dimensions and hoping to have a reply soon. Hopefully I did something stupid and that the listed dimensions are right (instead of me being right and being therefore unable to trust any of the measurements given on the site).

    On a tangent, I am currently planning on making a highly modified LIL CNC. I’d like to include stepper motor dampers to increase IPM, an Arduino replacement for serial ports, a dust shoe, a cyclone dust trap.

    In addition I’m planning on switching out the timing belts for leadscrews or racks & pinion. I feel like I’d end up screwing up the timing belts by tightening them to different tensions. I will update you on design modifications as I make them.

    in reply to: Z-Sled modification questions #3870

    Ming
    Participant

    Is there anything to hold the Z-Rail bearing assemblies to the Z-Sled besides a tight fit? I see that the X-Rail bearing assemblies are bracketed in place by trap and tensioner panels but there doesn’t appear to be any for the Z or Y axis.

    Also a related question: why do the Y-Rail bearing assemblies stick out so far from the Vertical Braces?

    in reply to: Z-Sled modification questions #3868

    Ming
    Participant

    Can I also reduce the width of the Z-Sled?

    Nevermind I see that the space is needed for the interlocking t-bolt joints.

Viewing 6 posts - 1 through 6 (of 6 total)