New build TX

This topic contains 8 replies, has 5 voices, and was last updated by  Nick 2 months, 1 week ago.

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  • #109046

    Nick
    Participant

    What a great project.

    Just finished my project today.

    Used schedule 40 aluminum with .1455 wall.

     

    I cant wait to strap the router on but 1st I have a question. Can I add endstops to my mini Rambo board?

     

     

    • This topic was modified 2 months, 1 week ago by  Nick.
    #109056

    Jamie
    Participant

    Welcome!

    Dual endstops for auto-squaring requires five independent drivers, two for X, two for Y, and one for Z.  The mini Rambo has only four, so I’m afraid it’s not possible.

    I’m interested to hear how well the aluminum works.

    #109067

    Jeffeb3
    Participant

    I’ll add, single endstops are possible, but aren’t very useful. We just use G92 to tell the machine where zero is, because it changes on every workpiece.

    #109128

    Bill
    Participant

    And I’ll jump in to warn that you’re liable to be replacing the tubes pretty soon. There’s a fair amount of force in the bearing to tubing contact, and aluminum will deform pretty rapidly.

    #109132

    Nick
    Participant

    Thank you @jamie guess a new motherboard will be on the Christmas list. On the bright side I can now start planning a lowrider :).

    #109133

    Nick
    Participant

    Thanks @jeffeb3. Will have to add G92 to my routine.

    #109136

    Nick
    Participant

    And I’ll jump in to warn that you’re liable to be replacing the tubes pretty soon. There’s a fair amount of force in the bearing to tubing contact, and aluminum will deform pretty rapidly.

    @bill I will monitor for any deformation thanks. I did not snug up the bearings to much so the rollers get on and off the tube with not to much force and I did check that they are sturdy. It is always a challenge when you mix materials. I thought 0.1455 in walls will help prevent deformation and still keep it light. Added some pictures.

    Still have to tidy up wiring and get it to the workshop before I can run it thru the paces.

    #109150

    Clay
    Participant

    Another Texas build! Interested to see how the aluminum holds up. Have fun!

    Welcome!

    Dual endstops for auto-squaring requires five independent drivers, two for X, two for Y, and one for Z. The mini Rambo has only four, so I’m afraid it’s not possible.

    I’m interested to hear how well the aluminum works.

    Well I mean, you don’t really need an endstop for the Z axis if you just want auto squaring.  I don’t have mine hooked up right now.

    Just make sure you don’t accidentally home the Z into the bed or raise it up too high where it falls out of the gantry.

    #109151

    Nick
    Participant

    Thanks, I will keep y’all posted on the aluminum.

    That was what I thought as well about squaring x and y.

     

     

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