Y axis coming up short

CNC Machines Shapeoko 5 Pro
1

I have never used the lowest point of the Y axis although I’m pretty sure I remember jogging the machine the way to the bottom of the Y axis and it was past the bottom edge of the table.

Today I wanted to cut out some parts using a 24x48 sheet. I first thought I’d have to remove the Bitsetter to fit the 48 inch width. It turned out that my sheet was 47.5 so I reinstalled the Bitsetter and reenabled it,

I also reinitialized the machine and now I cannot move the cutter completely to the edge of the table. As the picture shows, it stops about 1/2 in short

IMG_2629
IMG_26293024×4032 2.53 MB

. I can still move it all the way to the left on the X axis up to the edge of the squaring blocks you can see in the photo.

How can I reset the machine zeros? Thought I might go through a new machine setup but wanted to check here first to see what the problem might be,

Mike
Is

2

Zeroing is done per:

https://carbide3d.com/hub/courses/running-shapeoko/movements-zeroing/

How does your ability to position at the other corners relative to the MDF look?

3

I can jog the machine to exactly the corners on the MDF on the Y Axis. Both front corners come up short as shown. The X axis exceeds the MDF as it always has.

4

Check in w/ the folks in support.

If you’re willing to give up access to the back edge there is gantry shift:

5

I decided to run a new machine setup. I saw there is an upgrade to Carbide Motion so I installed that and did a new macine setup.

Improved somewhat; the back corners can be reached but still short of front corners on Y axis but a bit less, maybe 1/4-3/8 inch.

I thought my table might be out of square and rechecked it but seems square, certainly less than 1/16 on the diagonals.

I understand gantry shift can be used for cutting joints but I’d prefer not using that workaround and getting the full cutting area of the machine,

6

You should be able to see the physical limits. When the front face of the Y axis carriage (Red) hits the back face of the rail end cap (blue).

image

If jogging is stopping before these limits, check the soft & hard limit settings in GRBL, and the set limits for the machine.

$20 - Soft limits, boolean
$21 - Hard limits, boolean
$130, $131, $132 – [X,Y,Z] Max travel, mm

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