296 bytes added
, 02:20, 22 August 2011
Laser engraving acrylic. Left to right:
1) Extruded acylic, engraved through the protective paper.
2) Extruded acrylic, paper removed before engraving.
3) Cast acrylic, paper removed before engraving.
Engraving shows up on the extruded acrylic, but is much more pronounced on the cast acrylic.