I was in the middle of a burn when the power failed. I did not touch the workpiece so it remained in exactly the same position as it had been. I couldn’t get Lightburn to restart where it had left off so I assumed that if I started the whole burn from the beginning it would just go over the previous work. However, when I started the new burn the machine started in a different position and my workpiece was ruined. Where did I go wrong and how could I have finished the job without any problems?
The best way is to do a “Preview” of the burn… stop where you want it to begin, and then select “Start from here.”
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This is a high expectation, yet doable. When doing fills, I have also used the cut settings, to flip the fill direction 180º, start the job and stop when the new fill meets the one that did not complete.
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You will have great difficulty with this due to most machines having poor repeatability after homing…sorry to hear about the ruined piece. You may try designing some jigs to hold the work, and by having your machine retuen to coords 1,1 instead of homing to 0,0 where most have limit switches which causes a bunch of the headache.
I live in SC and we have power “glitches” all the time. I have a Longer Ray10 laser and because of its limited power, I have many runs over an hour in length. That being the case I’ve had a number of engravings stopped and I’ve had to resort to the replied suggestions. After a few of these “glitches” I realized rather than “patching in” the remainder of the etch another solution is to prevent power glitches. I did this by purchasing a UPS (Uninterruptable Power Supply). It is plugged into the power outlet and the etcher is plugged into it. It contains batteries and a DC to AC converter which kick in almost immediately (well before the etcher can respond to the “glitch”) It also allows you to run for extended periods (minutes to hours) during and after an extended power failure, based on the UPS’s rating. I implemented this about 4 months ago and have been running fine ever since, even though my power company produces " multiple glitches daily.
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The power where I live is pretty reliable but I lost power because I ran my table saw with a dado set and it overloaded the circuit. So I wont have to resort to an uninterrupted power supply. I will just refrain from using my table saw whilst I am carrying out a burn in future.
[quote=“selwynadelson, post:6, topic:119724”]
I lost power because I ran my table saw with a dado set and it overloaded the circuit.
[/quote]I don’t expect this to happen very often in the future because I lost power as a result of running my table saw with a dado set which overloaded the circuit and I don’t plan to do that whilst carrying out a burn in the future. Thanks though for your advice though and I will bear it in mind if I ever suffer the same problem again.
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Thank you for all your responses. I will bear all the advice given in mind if it ever hapens again
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We also have a video on how to do this here: https://www.youtube.com/watch?v=WmOGoHiYQu4&t
Maybe I missed it what kind of CNC are you using? I have an X-Carve and if I lose power or push the “soft” stop button in Lightburn, that project is pretty much done where it stops.
I am using an Atomstack 30 Pro machine
Thanks - that should be very helpful if the problem rears it’s ugly head again
A solution that many of us who use Plasma cutters, is to add a UPS (uninterruptible Power Supply. Even a small one will clean up and smooth out the incoming power.
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