A fun project which involves working with metal, wood and plastic. The end result is a machine that produces a flow of bubbles.

Age: 11+. Making time: 9-11 hours. Size: approx. 235 x 100 x 210mm.

Tools needed: sandpaper; saw; 7mm allen key; pillar drill; wood glue; paint etc to decorate. Requires 4.5V battery (not included).

Skills required: marking, drilling, sawing, cutting, filing, glueing and assembling.

Instructions included.