I’m getting a Faded areas or sudden lines right in the middle of an engraving job, I have redone the same job multiple time and it’s always the same issue sometimes it’s more aggressive than other.
It would really help us help you, is to include a photo of your finished item that’s incorrect.
Much better, you should get more hits on that image than a verbal description.
Is this orientated correctly? In other words is the X across it and Y up and down.
Is this tile, using something like the NTM?
I can see that it looks like a scratch in the coating on the left side of the image.
I don’t see why you’re getting an off color blaring at me.
What is your process for making these, if it’s not top secret?
Hey sir, very simple PNG sketch that I downloaded with other file extension such as SVG and other I’m just uploading it to bluebird I mean Lightburn and running it as is with approximately 1500 of a speed and 85 to 75 for power. I downloaded this image off-line on a ESTY.
I would think the X is up and down, judging by the calligraphy and the print orientation on the material the piece is resting on.
I’m not saying it is, but doesn’t it look like as if adjustments were made to P/S mid burn from the Move window. Of course this can hardly be the case…multiple times, so what else could give such a result?
This was an important question. Are you engraving coated ceramic tiles?
I adjusted the rail on the left, right on the 4040 Genmitsu Pro max, excuse my ignorance of the XY, so basically the right and left they were off by a 5 Cm don’t ask me how :). Then I ran another engrave. Regardless to the fact that it came out faded. It’s because.. I played little bit with the power and speed as well and this time I don’t have any line across the layout, I enclose another picture of the final output , so this is a glossy tile that I used with a matte water base white spray.
I’m running 1500 of a speed with 75% power so I should probably drop the power to 1100. I guess in 80-85I’m running 1500 of a speed with 75% power so I should probably drop the power to 1100. I guess in 85 power.
Rachid
Well done on getting your rails square at 90degrees to each other. I have only done that technique on wood with acrylic white paint but it looks as if your liquid coverage is perhaps slightly uneven in certain areas because some look slightly darker than the rest.
You can apply more power and/or reduce the speed and the laser will deliver more power to each lasered spot and so more colour to areas with a slightly thicker coating.
Also to say, using less power results in a longer service life from the laser module and less speed generaly means a more stable machine with less movement due to acceleration and slowing down to reverse direction and accelerate again.
Excessive speed and slowing can move the machine a tiny bit each time and result in misalignment of the X and Y rails and even if the machine is held securely, Excessive speed/acceleration and reverse movements can cause the machine frame to warp as the movements energy is transfered from one part of the machine to another.
Too slow is perfect for stability but results in longer job time, so you can find through observation and testing where is the optimal speed setting.