Drag to turn; right-drag, shift-drag or move two fingers to slide the view; scroll or pinch to zoom in on whatever is under the pointer; double-click a part to turn round it, and Reset view to go back. Pick a blade above. Each is its cut file’s own outline at 3mm with the cord tied through its hole. Whirled on the cord, a blade spins about its own long axis, and that spin is what roars: tick Spin it to see which way.