Our woodturning club was doing a demo on different styles of cutting wood. We have two 3520's at the club so we borrow the headstock and banjo from one lathe and mounted it on the other lathe side by side. It allowed us to compare cutting differentence and similarities of two philosophies side by side. The guy on the viewer's right used a 40/40 ground bowl gouge while the one on the left was using 5/8" Thompson spindle gouge. The idea was to encourage turners to develope a way to turn that works for them and refine those skills.