My 1st layer scan only initializes on MAYBE 3-4 out of every 10 prints, the rest of the time it throws an error not long after flow calibration happens. I only print on the cool sheet and the engineering plate and it doesn’t seem to matter what kind/colour of filament as Ive investigated a bunch of them with the identical results and I can usually just restart the print over and over until it eventually works. Anyone got any ideas as to wtf is going wrong? Or tips/tricks to increasing the likelihood of getting a scan?
I don’t have direct experience with a faulty lidar but here are two entries in the wiki that might be useful. The first is how to change it out and one of the last steps is to run a calibration and then a self test. I wonder if those two steps could help diagnose the issue.
The second details how to clean the lens. You didn’t mention any error codes, but I wonder if it could be just dirty enough to cause it to fail the inspection without triggering an error.
The only issue I’ve had with 1st layer scanning is that maybe 1 out of 10 times it’ll say there are defects when there really aren’t. It runs every time, though. Something wrong with the hardware on this machine if it’s failing so often.
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Same here, very few fails on the first layer scan, in fact it worked well twice and caught a bad first layer!
It worked all the time great at the beginning, but after a month or so it progressively worked less and less.
I’ve cleaned the lens, I’ve cleaned the calibration image on the right hand side and there’s no defects in it, I’ve unplugged and replugged the USB-C hiding in the top left side behind the plastic panel, and I’ve run Calibration and Self-test multiple times. All to no avail, and self-test doesn’t indicate that there are any issues.
The error I get is just the “First layer scan is not supported for this print” one.
What bed type are you all using?
I have been exclusively using the textured PEI plate since purchase and the first layer inspection isn’t supported since the textured plate is very difficult to interpret via automation.
I do hope they find a way to support first layer inspection on the textured bed, but that’s for another discussion.
Hi,
Since today, just after the update, I have the same issue 100% of the time.
I’m using the cool plate and since I’ve got the printer (a bit more 2 months) I have not received any error I’ve only used the cool plate so far.
Not sure if my problem is related to the one others are experiencing, in my case it looks like an issue with the firmware update. I’m so sad for updating…
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Roll it back to the previous version.
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I had no clue I can do that 
(roll it back)
I did roll it back and for the first print I didn’t get the error. (same print/settings etc)
So, I’m sure something is wrong with the latest update.
Printing with the sample PLA the machine came with, mostly default settings, using a thin layer of glue stick. It printed the test patterns alright, and then completely failed to print the first layer of the print, leaving nothing on the build plate except the test patterns. Then it “inspected” the first layer, and failed to notice that it wasn’t there, and tried to continue with the print. What’s this inspection for, anyway?
I use the Engineering Plate 70% of the time and the cool plate the other 30%, no difference between them as far as the FLS goes, still fails more often than it doesn’t.
I finally got around to wiring LED’s into my lid riser and now, if I set the LED’s to white the FLS seems to work 50%-60% of the time now, it’s still a far cry from how it was fresh from the box, but it’s better than it has been as of late.