BUNDLE - Build a doorbell for your room!

How it works ? Start by detaching the gears from the wooden boards, then identify all the small parts and hardware. Once assembled, you can paint it to personalize it and nail it to your bedroom door (there are 4 holes on the sides intended for this purpose). Then, there's no question of coming home without ringing the bell! What will you learn? -The different types of gears: gear trains, rack, pinion, circular, etc. -Ratios to calculate the speed at which gears rotate - The friction effect, the crank What's in the kit? You will find wooden elements: three large wooden gears, a large board and small parts to assemble. There is also hardware: nuts, screws, rings, washers, wing nuts, a hair tie and a bicycle bell. Each kit contains an illustrated brochure in 5 languages: - A step-by-step guide with very clear explanations and large illustrations - Educational content on the theme - Languages: English, French, Spanish, German, Dutch. Size: 27 cm x 18 cm x 5 cm Manufacturing: European Union Assembly: ESAT in Normandy (Supported work establishment) Tool required for assembly: none