Edited the g-code produced by PicEngrave Pro and converted all Z axis negative moves to positive feedrate instead. Ran my laser at full power and just varied the feedrate up and down to get shades on this mirror. Used Lithophane code and the lightest areas were ran at 25IPM and darkest areas were 65IPM and all feedrates in between gave it the rest of the shades in the engraving. The image is back-lit.

That is quite amazing Jeff - excellent work indeed. 

Tweakie.

Almost looks 3D, nice job Jeff.

Very Nice Jeff!     You fellas make  me want a laser even worser!  

Disclaimer!

Warning!!! These stunts are performed by professionals, please do not try this at home!!  


Just wondering, has anyone tried the back side of a mirror?  Would it burn the coating off and leave it just glass?  Would it reflect and burn the shop down?  Would it leave the areas black and maybe you could wash off the coating and get some really neat effects?  I emphasise back side here and that may be a no no.   Maybe it wont work with real mirrors but would with black paint on a piece of glass?  

Brett

That certainly is an awesome piece of work !
Thanks for your contribution,
Russ

.... I meant Jeff's SHIP.

(your post is some nice work also Brett)

Russ

   I try!

Brett

Just wondering, has anyone tried the back side of a mirror?  Would it burn the coating off and leave it just glass?  Would it reflect and burn the shop down?  Would it leave the areas black and maybe you could wash off the coating and get some really neat effects?  I emphasise back side here and that may be a no no.   Maybe it wont work with real mirrors but would with black paint on a piece of glass?  

Brett

Doe - That is done on the back side of a mirror.  

Tweakie.

   Yeah, I would think suggesting the front side would be a really bad joke, kind of hated to post it TBH but just had to know.....  

How did it turn out?  I have probably seen it already but I'm afraid I'm loosing my grip!  

You guys have done some absolutely inspiring work......  makes my jaw drop.....  

Brett

Thanks everyone.

Brett, like Tweakie said, that mirror was lasered from the back side. The image was flipped (mirrored) then the black areas in the original image had a deeper depth of cut in Z before I edited it to a feedrate. The slower the feed the whiter it is on the front because it burns the coating off. The faster the feed, the darker it is on the front and leaves the reflection. Did not have to do any scrubbing, just sprayed a very lite coat of clear paint to protect the back from getting rubbed off from touching it.

Jeff