Hello friends
Well I am stumped, mainly because I cant figure out what to call the question I need to search for it in forums. I am sure that it is somewhere here.
I have a 60w and a 100w Chinese lasers. The 100w is new. I have both of them going, and realized the 100 is going significantly father past the edge of the engraving than the 60 w does.
Is there an acceleration setting somewhere that I am missing? Or a passover?
Thanks
Matt
Need to elaborate on what you mean here…
It sounds like you’re talking about overscanning. Your controller will automatically add additional movement past your engraving area to allow space for your laser to speed up and slow down before and after firing. Overscanning distance is determined by the speed you have your layer set to in LightBurn, and the acceleration setting in your controller’s configuration. Increasing speed requires more space to accelerate in, while increasing acceleration reduces the amount of space needed. If you’re running jobs to your 100W faster than your 60W, that explains the difference. If you’re running your jobs at the same speed for both lasers, the difference must be in acceleration.
You can go to ‘Edit’ > ‘Machine Settings’ and compare acceleration values for both lasers under ‘Engraving Parameters’, as well as the max acceleration values set for your X and Y axes under ‘Vendor Settings’. Most likely you are scanning horizontally and only the X value will be important. It’s possible your acceleration is set unnecessarily low in your 100W’s configuration.
Most likely that axis in the 100 W has a (much) lower acceleration setting than the 60 W:
Edit → Machine Settings → Vendor Settings → X Axis Settings → Max Acceleration
The 100 W may have more mass on the gantry requiring a lower acceleration than the 60 W. You can increase the acceleration by, say, factors of 2 until it starts losing steps on a test pattern, then back off by a factor of 4.
The most difficult patterns will have many relatively short travel moves with the laser off, because those use the Max Speed value instead of whatever the LightBurn layer calls for as the cutting speed.
JTR
I could kiss you. I have been having the hardest time with this machine in replicating engravings from the 60w. The 100 was an upgrade from my back up machine which was a 50w and everything has been coming out like junk. I hadn’t thought to previously. Assumed they would all be the same, but I changed all the engraving settings over to copy the 60 on the 100 and am getting perfect results. I am sure there will be plenty of fundamentalists here that will say my machine is going to explode as a result, but so be it! We are rolling with it now and I will know longer pull out my eyelashes.
Thank you thank you thank you.
Matt
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