A 2mm acrylic sheet (aka Perspex) weighs 2.4Kg per square meter. To keep your transparent surface from wobbling, you’d need something fairly thick, around 4mm, that’s 4.8Kg per square meter.

A mere plain window mod would never be enough so he engraved the official girlz 0f destruction logo onto the 2mm perspex. The trick here was to mirror the image before printing it and then ...