grab a suede eraser (or one of those pink pencil erasers, if that’s all you have handy). Rub the eraser on the stains, and don’t be afraid to apply some pressure! Keep rubbing until the marks ...

He started by making models of each segment out of pink erasers. The lower left image of the vignette above shows the eraser segments super glued to some poster board. The decimal is a pencil ...