One thing I can say is that your controller believes that it’s moving the full 550 mm.
A few questions:
Are you saying you’re determining distance travelled by comparing to measurement marks on the honeycomb bed?
When you burn something, does it come out dimensionally accurate? For example, if you burn a 100x100 mm square, does the resulting burn measure 100x100 mm?
One note. Since you do not have homing switches you will need to manually home your device before use. With the machine off, manually move the laser module to the front-left of the machine, then turn on. That will zero-out the origin at that position and allow Absolute Coords to work correctly.
! No. 500mm is the measured distance to the edge of the honeycomb, give or take. When I frame it is well past that mark.
2. My initial check and a 50mm square is spot on
Thanks for homing advice that I have been using for ages. Had thought of fitting homing switches but did not see the need
On a different subject I have at last suceeded replicating a “Print and Cut” which was giving me allignment problems
Can you do the File->Save gcode for the design that’s 550 mm tall and upload here?
Also, while you’re at it, can you burn a large rectangle at least 550 mm tall and measure the size? I suspect this won’t measure correctly in spite of your 50x50 mm test.
I only run the laser from the Macbook. I also found out that althogh both computers are on the same version of Lightburn when files are transferred via the cloud they are not the same. I have found that if I design in Inkscape on the iMac I have to open and save the same file on the Macbook
Have switched rotary off
Retested and still cannot get to the 550 mark either with frame, burn or G0 Y550
