Mirror Laser Engraving 6W LD

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banjags
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Re: Mirror Laser Engraving 6W LD

Postby banjags » Fri Jan 13, 2017 9:16 pm

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?

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Picengravertoo
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Re: Mirror Laser Engraving 6W LD

Postby Picengravertoo » Fri Jan 13, 2017 10:06 pm

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
Capture.JPG (222.96 KiB) Viewed 4876 times


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

banjags
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Re: Mirror Laser Engraving 6W LD

Postby banjags » Fri Jan 13, 2017 11:09 pm

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

banjags
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Re: Mirror Laser Engraving 6W LD

Postby banjags » Sat Jan 14, 2017 12:34 pm

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?

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Picengravertoo
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Re: Mirror Laser Engraving 6W LD

Postby Picengravertoo » Sat Jan 14, 2017 1:51 pm

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

Here is the front.

9454450.jpg
9454450.jpg (130.76 KiB) Viewed 4863 times


And the back.

5209175.jpg
5209175.jpg (70.38 KiB) Viewed 4863 times

banjags
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Re: Mirror Laser Engraving 6W LD

Postby banjags » Sat Jan 14, 2017 6:19 pm

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.
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IMG_0031.JPG
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Picengravertoo
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Re: Mirror Laser Engraving 6W LD

Postby Picengravertoo » Sat Jan 14, 2017 6:28 pm

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

banjags
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Re: Mirror Laser Engraving 6W LD

Postby banjags » Sat Jan 14, 2017 6:36 pm

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.

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Re: Mirror Laser Engraving 6W LD

Postby Picengravertoo » Sat Jan 14, 2017 7:02 pm

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
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Re: Mirror Laser Engraving 6W LD

Postby banjags » Sat Jan 14, 2017 7:04 pm

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


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