http://youtu.be/pXr88odnABM This is my first 3D design and one of my first prints on my Printrbot Simple Metal. It's a weight designed to hold down musical keyboard keys for ambient, electronic, drone, and experimental music. When you need more than 10 fingers, reach for one of these. Print the two parts, fill with 40 pennies, snap the pieces together, and voila! This should be heavy enough to hold down even heavily-weighted keys. I designed it with ramps on the side panels to help balance it on the smaller ebony keys. All sides can be used as the press-down side. Please let me know your experiences! I'm including two versions for download -- one with the Circuit Benders' Ball logo and one without. Feel free to customize with your festival, band or company name.