Trouble with the laser cutter

[Akarsh Simha]

Hi

I did the usual startup routine, focus check and cutting table
calibration on the laser cutter. Then tried to print my design, but
here's the error I get:

"Z failure because of erroneous fixture height. Try re-seating the
fixture. Also, try recalibrating the fixture height".

What does "fixture" mean in this context? It looks like the cutting
table was newly replaced or something? Is it related to the cutting
table?

Regards
Akarsh

[Akarsh Simha]

In my expectation, every time you save the cutting table calibration
after checking the focus, it should zero the current Z position.
However, even if I save it, it doesn't zero. Is that normal?

Regards
Akarsh

[Akarsh Simha]

Okay, I figured out what it was... too bad it's already quite late.

I had the focus position at a negative Z value, which was not
acceptable to the driver, it seems. The word "fixture" was obviously
misleading because the manual makes a distinction between "cutting
table" and other "fixtures". Just a note for future -- when the driver
says "fixture", it means "cutting table" because we have no other
fixture capabilities AFAIK.

Fortunately, it is just a few tens of mils off, so it shouldn't affect
focus quality much.

Regards
Akarsh

[Akarsh Simha]

Also, please note that for some reason, the zero of the Y axis is
quite badly off, almost by an inch. I moved the cutting table forward
by an inch to compensate for this. So if you push the cutting table
back against the guides, please be aware that you are probably badly
off.

Regards
Akarsh

[Riley]

The cutting table needs to be all the way back for proper airflow

please move your material down an inch (or whatever) the y axis until a guru has a chance to sort it out rather than killing another lens

-
Riley

Akarsh Simha <akars...@gmail.com> wrote:

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[Erik Olson]

Rebooting the PC and the laser fixed it last night: the laser goes to the origin and cozies up to the limit switches and all is well.

Another risk of operating from the wrong origin is that you can crash the lens module into the edge.

[Erik Olson]

I saw this error today. Rebooting didn't cure it. I used "Home Z" in the ULS Viewer, after which I was able to proceed with calibration.