Welcome to Our Community

Some features disabled for guests. Register Today.

1500 x 750 ox rebuild

Discussion in 'CNC Mills/Routers' started by The Todd, Mar 29, 2017.

  1. The Todd

    The Todd New

    Aug 19, 2014
    Likes Received:
    Hiya folks

    I've been running my 1500x750 ox for the past couple of years with great success, but I'm looking to rebuild or possibly just build a new machine. I went through the builds and didn't see much info on a machine around that size, so this is what i'm thinking:
    -1500x1500 C rail to give me a 4ftx4ft work area
    -Acme lead screw all around
    -Metal V Wheels on Open rail
    -High torque NEMA 23's
    -Mach3 compatible controller

    I have a ton of scrap aluminum at work for making my own side plates and X/Z axis parts. I'm concerned about the strength and rigidity of the C rail over a 1500mm distance. Has anyone used the C rail over that distance?

    Thanks for any info or links :)

  2. Rick 2.0

    Rick 2.0 OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Dec 20, 2013
    Likes Received:
    Not a good combination. The steel wheels will wear down the aluminum OpenRail. Truly you're best off sticking with the solid V's and the C-beam grooves.
  3. Giarc

    Giarc OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Jan 24, 2015
    Likes Received:
    I used this Excel Sheet to calculate Deflection and ultimately decided to support my 1500 mm Y axis the full length. Because of this support, I also went with regular v-slot 20mm x 80 mm. I gained 40 mm in the x axis that way. No sagging from the weight of the gantry and since it is fastened to the frame which is permanently mounted to the work bench, I get no noticeable side to side flexing either. I used 1/2 - 10 five start Acme screws for the Y axis so the anti-backlash nut would have been a real tight fit to get my custom made ones in the c-beam so I ran them on the outside of the gantry plates. This was another reason I moved away from the c-beam. For my X axis, I bolted together two 20mm x 80mm v-slot beams. I lined them up with the 3d printable v-slot connectors in the resources section. This made drilling and bolting easier. If I were going 1500 mm in the X, I would bolt three together (maybe 4). I only have an 850 mm X axis. I didn't have room for anything bigger. I can cut 26.5 inches by about 52 inches. My goal was 2' x 4'.

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice