set parametric set isosamples 50,10 set hidden set title "Interlocking Tori" set key below set urange [-pi:pi] set vrange [-pi:pi] set isosamples 50,20 splot cos(u)+.5*cos(u)*cos(v),sin(u)+.5*sin(u)*cos(v),.5*sin(v) with lines, 1+cos(u)+.5*cos(u)*cos(v),.5*sin(v),sin(u)+.5*sin(u)*cos(v) with lines