I just finished making a bubble box out of legos, and different micron nylon screens. they are 150u, 105u, 73u...took me like a while to make this thing. it has a swivel on it so i can turn the screens sideways to look at my kief and a locking mechanism to keep it as a whole and all the screens can separated if needed to scrape. i thought i would share it with fmb. i have just started using it and it awesome dimensions are:
5.5 inches tall (14cm)
4.5 inches width (11.25cm)
4.5 inches depth (11.25cm)
here are some pics of it
opening the box
http://i26.tinypic.com/2191jqp.jpg
150u top screen
http://i30.tinypic.com/1604m8l.jpg
105u second screen
http://i29.tinypic.com/29fyolu.jpg
73u last screen
http://i25.tinypic.com/286y1ol.jpg
acrylic plate
http://i30.tinypic.com/148d9h2.jpg
swiveling mechanism
http://i26.tinypic.com/155jndv.jpg