Hi, Tim here. I have a problem when engraving on my Neje E80. The first time I noticed the problem was when I was engraving a set of 4 Nameplates side by side. All had the same name and the letters were set to fill. I noticed that as the laser went from side to side, at certain points the head would slow dramatically but the power didn’t drop. As a consequense, the laser burned through to the back just at these points (short dashes about 2mm long). I discovered that I could eliminate these dwells if I changed the settings from fill all at once to fill individual. But, here’s the rub. I have just engraved a large (ish) image that I set to fill all at once and the heag is doing exactly the same. Now because the image is what it is, a single entity with gaps at varying places, I’m loathed to set it to fill individual parts (there is only one anyway), I’d like to find out if it can be resolved without fudging it. Just to give as full a description as I can I’ll mmention that if I repeat the same job, the laser slows at the exact same points. Any ideas, guesses or known cures would be very appreciated.
Thanks and regards, Tim.
This suggests the controller can’t keep up with the command stream over the USB link and stalls while waiting for enough data to continue. Because it’s consistent, it’s not due to USB errors.
Typically, this comes from a too-small Line Interval, which should be around 0.2 mm = 127-ish DPI. A very high power diode laser may have a focused spot larger than that, so run some Interval Tests to determine the proper spacing.
If the controller supports G-Code Clustering, enabling that will compress some of the data. If the controller doesn’t support clustering, then you’ll get horrible error messages and failed jobs, so practice on cardboard until you’re sure it works.
If those don’t improve things, there are other paths to explore …
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