Squaring XY. Inserting Z Assembly Throws it Off

New Home Forum Mostly Printed CNC – MPCNC Troubleshooting – MPCNC Squaring XY. Inserting Z Assembly Throws it Off

This topic contains 5 replies, has 2 voices, and was last updated by Profile photo of P3DCNC P3DCNC 1 week ago.

Viewing 6 posts - 1 through 6 (of 6 total)
  • Author
    Posts
  • #27671
    Profile photo of P3DCNC
    P3DCNC
    Participant

    Hi gang. Found that if I don’t have my Z assembly in, the XY is easily squared. Then I tighten it. Still good. Then I install the Z and it throws it out of square by 3/4″. (1st pic without Z, 2nd with Z)

    Thoughts…

    #27674
    Profile photo of vicious1
    vicious1
    Keymaster

    Yup, it has to be done with all 4 tubes in place. Have another look through the instructions.

    #27682
    Profile photo of P3DCNC
    P3DCNC
    Participant

    I remember when I assembled it following the instructions. A few issues I had:
    1. The bolts don’t slide in at all. I have to turn them in with a socket or wrench. The fit is very tight.
    2. When I put any of the rails on with the bolts loose, they already are oversnug. (See pic attached)

    The pic shows the tube just sitting on the bearings, with the tension bolt nut loose.

    How loose fitting should the bolts be? Just slide in?
    How loose should the fit between the tube and bearings be before you tighten the adjustment bolt?

    #27685
    Profile photo of P3DCNC
    P3DCNC
    Participant

    What should it look like @vicious1 ?

    #27686
    Profile photo of vicious1
    vicious1
    Keymaster

    I get notified of every post no need to send me two notifications and sending an @, please.

    No the bolts should not just slide in.

    The tubes are an interference fit, they should be snug.

    #27701
    Profile photo of P3DCNC
    P3DCNC
    Participant

    Did not know that sorry.

    I have yet to succeed but I will try and convince it to stay square.

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

You must be logged in to reply to this topic.