Dick challenges the team to build a Roman catapulta.
Available until 19:00 21 Oct 2014
This week, Dick challenges the team to build a medieval machine gun known as a Ribauldequin. The first ever multi-barrelled gun, it could pump out walls of lead that could rip through armour and repel wave after wave of attacking knights.
The toughest and most dangerous part will be casting the barrels, dealing with molten bronze at temperatures of over 1,000 degrees Centigrade. They are also making bullets and playing with gun powder. What could possibly go wrong?