Last week Marko Luther send me the Colino coffee grading kit. The Tonino team consisting of Marko Luther and Paul Holleis developed a system with a full array of sieves for Arabica, Robusta and even peaberry green coffee beans under the name Colino. The colino kit was partly inspired by my lasered coffee grading kit, but improved on many aspects. My kit was large, made of plastic and expensive to produce. The Colino kit however is small, completely biodegradable, can be easily stacked and can be produced & shipped at lower costs.
See for more information and an assembly instruction this post on Frans Goddijns’s blog.