Tramming the X Axis

[Nexus77241 (Dave Tepper)]

Hi,

I was doing a multi layer epoxy carve and I realized that my shapeoko 3 xxl machine is seriously out of tram. I also realized that when I installed my z upgrade that I’m missing a few parts. I was very new to cnc and this was my first one. This is from the instruction manual.

This is what my machine looks like. As you can see, I’m completely missing the essentric non threaded spacer so I can’t tram the x axis. The left side of the picture is lower than the right.

Is there a workaround?

Thanks!

[MadHatter]

There are eccentric nuts that the v-wheel axles run through. You use those eccentric nuts to level the z-axis. You can see one of them on the bottom left corner of your z-axis assembly in your picture.

EDIT: I’m leaving my wrong comment suggestion because I was not fully awake before I responded.

You should have - and need - two of the eccentric nuts to properly tram your z-axis. You can pick them up from carbide3d if you contact support, or you can get them from other CNC parts sellers.

I have a few spares that I bought from somewhere because at the time I wanted the spares, carbide3d wasn’t selling them just for spares.

[MadHatter]

After my post and edit, I did a search and found these: Shapeoko HD Eccentric Nuts (QTY 9) - Carbide 3D

And the honest answer is - the workaround is get the eccentric nuts and do it right.

[WillAdams (William Adams (Carbide 3D))]

The eccentric nuts are on the bottom — they should ensure that the top V wheels are firmly against the top V rail and cannot lift off.

My work-around for this is to:

• loosen the bolts on the top V-wheels of the carriage and the spindle mount
• ensure that the machine, end-plates, baseboard, and gantry rail are level/in-line with each other
• push down on the spindle mount and carriage so that they are flat and level on the 123 blocks and the gantry and secure them in place