Mirror Laser Engraving 6W LD

[banjags]

Could you email the dithered image so I can see what you mean. Banmanj@gmail.com

When I dither you can see many many dots your dithered image I cannot. What px res do you use for your 6w?

[Picengravertoo]

I'm not at the shop where that ship image is. I just downloaded this image and did not do any editing to it.

http://tallshipsphiladelphia.com/conten ... 24x682.jpg

I just Dithered it with Atkinson and the default constant of .125 and took a cropped out snapshot of it on the PEP5 image editor screen.

Capture.JPG (222.96 KiB) Viewed 4876 times

The Pixel Resolution I use with our 6W is .007".

[banjags]

Ok that's looks a little more like what I am seeing. I am trying a new image with atkinson dithering

[banjags]

When you have a chance could you post a pic of the back side of one of those mirrors. I get a strange cross hatching or burlap type pattern in my burns. Do you know what could cause that?

[Picengravertoo]

I never noticed any cross hatching. Most likely it's something mechanical causing it.

Here is the front.

9454450.jpg (130.76 KiB) Viewed 4863 times

And the back.

5209175.jpg (70.38 KiB) Viewed 4863 times

[banjags]

Take a look at these 2 pics and let me know what you think? See how it has a plaid or cross hatching. Does not look anywhere as nice as yours.

[Picengravertoo]

Do you have both horizontal & vertical engraving angle selected at the same time? Maybe the mirrors back coating is causing that.

[banjags]

No its 45 degree engraving. Could it have something to do with the laser size? I have it set to 0.177mm or ~0.007". I dropped it from 1200mm/min to 900mm/in. This one has been the best dithered engraving so far.

I could very well be the coating as these mirrors require considerably more power to engrave then some others I used to be able to get.

[Picengravertoo]

Try engraving at the other 45D angle and see if it improves. I suspect it's the back coating causing that though. It sorta gives it a texture like laser photo engraving on Artist Canvas.

[banjags]

There is only one 45 degree angle available under the 3d laser category. maybe horizontal?