Street art

[Drewster]

Ah, you have to be standing in exactly the right spot then.

Yeah - Its like those funny slanty smears on Football Pitches....When you see them on Telly they look like they are standing up in the middle of the grass and you (maybe not YOU but some simple minded people) wonder why the players don't trip over them

[TimberWolf]

I saw something interesting the other weekend. 3D engravings made inside some kind of crystal. You sit in front of a kind of a machine that scans and engraves a 3D image inside otherwise clear crystal. The resolution of the image looked a little rough, but it looked like it had potential as a bit of fun, if not exactly a replacement for a 2D photograph.

[OwlHoot]

I saw something interesting the other weekend. 3D engravings made inside some kind of crystal. You sit in front of a kind of a machine that scans and engraves a 3D image inside otherwise clear crystal. The resolution of the image looked a little rough, but it looked like it had potential as a bit of fun, if not exactly a replacement for a 2D photograph.

They've been selling those for years in charity shops, images of the Eiffel tower and suchlike. I think it's just done with a laser shone into a perspex block to selectively "disrupt" regions forming the outline.

If they could come up with a robust high resolution colour version that would be quite something.

[TimberWolf]

They've been selling those for years in charity shops, images of the Eiffel tower and suchlike. I think it's just done with a laser shone into a perspex block to selectively "disrupt" regions forming the outline.

If they could come up with a robust high resolution colour version that would be quite something.

Yes, now that you mention it, it probably was perspex.

[TimberWolf]

Yes, now that you mention it, it probably was perspex.

I passed the joint again yesterday and they maintain that they use the "finest optical quality crystal" and not perspex. But lacking data on what type of crystal they employ and a working definition of what a crystal is, I suppose it may still be perspex.
http://www.3dcristal.com/en/about