This model shows three right circular cylinders of equal radii intersecting at right angles. It pairs nicely with the Steinmetz 3-cylinder solid (http://www.thingiverse.com/thing:917124). This model was designed and printed by my WLU summer research student Emily Jaekle ('16). See http://mathvis.academic.wlu.edu/2015/07/12/three-intersecting-cylinders/ Update 7/27/15. We are having trouble printing this object, and may need to redesign it. Stay-tuned.