- 45 minutes
Parental supervision required
Try out these kits, they're cracking!
Grab a few household items and build your own balloon-powered hovercraft – just one tap sends it flying. You can also make it your own by adding some Wallace & Gromit cut outs which you can download from our website.Instructions below
This kit requires the use of sharp objects and electric tools, always be careful!Download kit Instructions and extra parts to make your kit look great! PrintPrint these instructions and get making!
Check you have all the required items listed in the ingredients box above.
Make a hole in the side of a bottle top and push the tube through.
Hot-glue the inside of the hole – but don't block the end of the tube. When the glue is nearly set, try blowing through the tube to check it's clear.
Hot-glue the gap between the hole and the tube. This needs to be airtight, so add glue around the hole.
Hot-glue the other bottle top upside down to the CD. Try to make it as central and upright as you can. It must be airtight, so add more glue if you need to.
Now hot-glue the two bottle tops back-to-back as shown. Again, you need an airtight seal.
Test that your contraption is airtight and the valves work. Close both valves and blow into the tube. If you can hear air escaping, find the hole and patch it up.
Slide the paperclip onto the tube. Hold it with a pair of pliers as shown and bend the bigger loop downwards.
Push the paperclip further onto the tube and loop the other end through it. This should temporarily seal the tube. Now test it by closing the bottom valve, opening the top one and blowing into it. If you hear air escaping, adjust it until it seals properly. The tube needs a sharp kink in the corner to seal.
All working? Good. Add the balloon on top.
Time for decoration! Cut out and colour in the printed parts and cut slots where indicated in the base.
Fold Wallace and Gromit's tabs backwards, and pinch-fold along the dotted line. This should keep them upright when glued in.
Spread a little glue on the CD. Insert Wallace and Gromit through the slots and press everything down. Let it all dry. Make sure nothing hangs over the edge.
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