Missing some complete closed profiles

[HenryM (henry)]

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p300-Mat-2.lbrn2 (68.5 KB)

[HenryM (henry)]

I am using Lightburn Core 2.1.04 with an XTool S1 laser to cut wood veneers.
Attached is a picture which shows at the top the cutter path in Lightburn Play below and a section of the veneer which was cut. The red lines point to 2 shapes where only the outer profile was cut. The green shape encloses a ‘mark’ which does not seem to ‘belong’ to the veneer The other inner and outer shapes were cut as required. Also attached is the Lightburn file which was used.
I then removed all the parts but the two which failed and ran with the same settings. This time both profiles were cut.
Why has this happened and who should I talk to find out how to prevent this happening again?
strong text

[ednisley]

@HenryM

green shape encloses a ‘mark’ which does not seem to ‘belong’ to the veneer

Because the Preview looks good, at least here, dropouts like that suggests a USB communication problem, which is (unfortunately) all too common, between the PC and the laser controller.

Some previous discussions explore the situation and suggest solutions:

My Cherokee Beast

WOO HOO !!! I got everything working right , FINELY !!! What was the problem? It turns out to be the USB to Controller board cable was faulty. That was the only thing I failed to check and that was it. I have a bad habit of buying one to use and one to loose. When I thought about the cable being bad, I got the cable out the spare controller kit and that one worked. I feel really stupid sitting here thinking how I spent 4 to 6 weeks crying and trying to fix this thing and never though…

Unusual laser/galvo problem?

Problem solved I checked virtually every connection. I cleaned the entire inside of the laser. I added additional ventilation. I tested two other good quality USB cables. None of the above helped — the laser was still stopping randomly. In a moment of desperation, I remembered an absurdly expensive USB cable that I use for data transfer from my camera. Using that cable solved all the problems. Most likely some kind of interference was occurring and causing signal iss…

Lightburn not connect with my laser

Thank you Mike for all the help, that was the problem, I replaced the USB cable with a new one and it took care of my problem. Thank you, John J

Also, unless you have a compelling reason to cut the outside (red) lines first, doing the inside (green) lines first will preserve their alignment: when the red piece gets free, it will almost certainly be misaligned for the green cut.

[HenryM (henry)]

Thanks for that which i hope it is since other options like problems with the S1 are so worse to think about. Thanks also for suggestion about cutting order. There are small tags to hold the parts in p!ace but the order makes sense.

[ednisley]

@HenryM

which i hope it is since

There is no way to tell if a specific USB cable will “work”, other than by trying it.

From what we’ve seen around here, spending more for a cable with ferrite cores improves the odds, although I recommend buying from a seller that does not also carry swimwear, pet feeders, and home decor items.