I have still trouble marking thinner metal sheets with CO2-Laser.
It´s an 60 Watt, KT332N controlled CO2 laser.
Metal sheets should be marked using Cermark Ultra - which works pretty good.
But if I have thinner metall sheets then the sheets heat up and starts deforming, so corners are “coming up” during the engraving process.
This doesn´t happen immediatly, it always took some minutes after the laserjob was started.
Is there an way(option, setting) in Lightburn to add pauses when using fill mode?
So metal sheet can cool down and the inner tension of the material can get lower?
Used settings where:
Air Assist ON
I made an material test to find these parameters, so reducing the power isn´t an solutions, cause then the marking will be too weak and don´t “stick” on the metal surface.
Maybe doing a pause could also help to avoid thin glass from cracking during engraving process - cause then the thermal stress inside the glas could be reduced also.
A heat sink maybe could help - haven´t anything here yet.
So that was the reason why I wonder if it´s possible to add some pause in Lighburn during engraving.
You shortly engrave some lines - make a break, material can cool down, the heat distributes inside the material - and the laser can do the next few passes…