I have a problem with deep engraving on stainless steel. I am using a JPT MOPA 60W laser.
I am attaching a photo of the engraved steel. Both elements in the photo were made with exactly the same settings.
Why does the element on the left have a very uneven and burned surface, while the rectangle on the right is perfectly smooth?
How can I achieve the same smooth surface on the left side as on the right rectangle?
I am wondering what is causing this. Could it be incorrect laser timing settings, or is the problem more related to accumulating dirt?
Are you using some form of coating for the inset on the left?
Just guessing, but looks like some “splatter” is coming off the inset and then being fused to the background.
I found the solution to my problem
I think this might be useful for someone else.
I’m attaching another photo of properly done deep engraving. The solution to the problem is indeed air assist.
After setting up a very basic air assist in just 2 minutes, the results are excellent
Good result!
With raw steel, the first thing I would do is a layer of cleaning and sanding the engraving field.
Of course, the photo shows that the LB does not have enough auto-rotation when deeply engraved. I hope they will add auto rotation soon.
They did 0/90 deg changes in 3dslice to keep the detail. Sometimes the bits don’t line up with other rotational increments. I doubt this will change.
