HACK 1 - Chop Saw Some stuff I used: Chain saw STIGA 405 2HP Belt 10 mm Ball bearings UCPA 201 x2 Metal cutting blade 300 x 32 x 3,2 mm Set of home made pulley 1:1,75 Aluminium sheet (guard..What do I think about this modification? My saw was unregulated and didn't have full power. Pulley in the saw should be made from hard material (hard wood, aluminium or steel) Spring washers must be used in all screw. For certainty you must use a counter nut to fix the blade.