Lately I’m not able to cut juice grooves in my cutting boards using my machine because it will not cut a straight line. I’ve torn it apart and put it back together and still have the problem. When I manually move to the back, one side doesn’t completely touch the rear of the frame and when I move to the front, the same issue but this time it’s the opposite side. The frame is squared to 1/16".
I am shooting in the dark here. Could it be the belts are off by one or more teeth?
Being out-of-square wouldn’t make the lines not straight - they would be straight, but each axis would not be at 90 deg to each other.
If your lines are not straight, do you mean that the curve slightly (but smoothly), or that the lines are ‘wavy’ along their length?
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The typical culprit for wavy lines on a Shapeoko3 is a loose vwheel somewhere. Inspect all of them (12 vwheels) and make sure none of them is spinning freely. All bottom vwheels should be just tight enough they if you move them with your finger while the machine is powered off, the gantry moves.
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“When I manually move to the back, one side doesn’t completely touch the rear of the frame and when I move to the front, the same issue but this time it’s the opposite side.”
This needs corrected with Step 11 of the assembly instructions available on the website. (On my computer, there is a link to documentation at the bottom of the list of links which start with the one to this forum.) This will not solve wavy lines but should correct x and y grooves which are cutting out of perpendicular.
As @Julien noted, the usual culprit here is a loose V wheel — the other possibility is a failed belt.
That said, it should be possible to square the machine better, or at a minimum, adjust things so that the gap is at the left rear corner — write in to support@carbide3d.com and we’ll do our best to walk through this w/ you.
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