NewsRust Effect Sign designed and installed by Stemm. Posted on August 14, 2019August 15, 2019 by Jonny Stemm designed this fantastic retro looking Rust Effect, internally illuminated sign. The external sign was installed by our team to stand the test of time. Jonny Polystyrene letters, with gold mirrored dibond. Bespoke Wallpaper installation for Fibre Bar, Leeds