Hello,
I was trying to generate test settings for cutting ABS sheet, but while setting the “Min speed”, I am not being able to enter speed greater than 2000m/sec. I want to try speed between 5000 to 7000.
Is there anything I am not doing right?
My machine has Rudia 6455s controller.
Thank you.
I can confirm the same upper limit in the material test.
What kind of machine do you have? Speeds in that range would be alarmingly fast and are certainly not common in consumer machines.
The fastest machines around are Epilog and Trotec (Neither of which are LightBurn compatible) and they run at around 4,000 mm/s. There are no Ruida based machines that even come close to that, so not sure why you feel you need 5,000 to 7,000 mm/s speeds for your material test.
I was mistaken, my machine’s max speed is 700mm/sec.
So, while cutting, if I set the speed to 5000mm/set (which is now obviously more than my machine can do), what speed will Lightburn use? My machine’s max speed 700mm/sec or something else?
Please pardon me for my noob questions.
Thank you.
You maybe confusing mm/sec and mm/min. You maybe more comfortable using mm/min.
You can command any speed you want, but the laser controller will limit the actual speed using the Machine Settings values for the X and Y axes.
Using speeds beyond the actual limits can have unanticipated side effects, on both the high and low ends, because the controller scales the laser power based on the XY speed. It’s good practice to avoid unrealistic speeds, if only to avoid puzzling behavior.
Also, use consistent units. If you set LightBurn to use inches in the workspace display, set the laser speeds to inch/sec. This will not affect the controller’s display in the console, which will be mm/s and confuse the daylights out of you. I use millimeters in my shop, despite being in the US, because it simplifies all the calculations.
Fun fact: laser manufacturers often goose their numbers by claiming the speed along the diagonal of a square, rather than along either axis. My OMTech laser came with a 500 mm/s speed limit on each axis, but the claim was “up to 700 mm/s”. It will hit that speed along the diagonal of a square, because ol’ Pythagoras taught us that speed will be sqrt(2) = 1.4 times the speed along the sides: 700 = 1.4 × 500.
Keep in mind the simple facts of lps response time and actual head speed…
Have fun
Thank you folks, much appreciated.
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