Season 13

Artwork

#	Image	Title	Aired
1		Hammers; Swiss Cheese; Roller Skates; Coloured Pencils	May 1, 2009
2		Carbon Fiber Bicycles; Blood Products; Forged Chandeliers; Ballpoint Pens	May 1, 2009
3		Swiss Army Knives; Player Piano Rolls; Oil Tankers; Racing Wheels	May 8, 2009
4		Bowling Balls; Barber Poles; Felt; Radar Guns	May 15, 2009
5		Copper Pipe Fittings; Cylinder Music Boxes; Pepper Mills; Hot Rod Steering Columns	May 22, 2009
6		Gears; Leather Watchbands; Vitrelle Dishes; Kitchen Shears	May 29, 2009
7		Pressure Cookers; Mechanical Singing Birds; Oceanographic Buoys; Tank Trailers	Jun 5, 2009
8		Aluminum Boats; Alpine Horns; Luxury Watches	Jun 12, 2009
9		All-Terrain Vehicles; Alpine Skis; Laser Cutters; Marble Sculptures	Jun 19, 2009
10		Socket Sets; Leather Shoes; Aluminum Water Bottles; Bike Chains	Jul 3, 2009
11		Carved Wood Sculptures; Flatware; Cow Bells; Fountain Pens	Jul 10, 2009
12		Olive Oil; Lift Trucks; Seamless Rolled Rings; Ski Boots	Jul 17, 2009
13		Cookware; Inlaid Boxes; High-Efficiency Water Heaters; Vespa Scooters	Jul 24, 2009