full episodes downton abbey

Stone is hard to carve, but very easy to model, as Rob shows. This is an excellent, inexpensive and simple way to create :stone" in model landscapes and railway layouts.

Joke cards are popular, so Rob shows how to make one that will give anyone opening it a noisy surprise

In Queensland, Australia, deadly jellyfish keep you out of the water just when the weather makes bathing most attractive, but how do these tiny creatures pack such a lethal punch? Rob makes a simple model that shows how their stinging cells work.

Pop-up books are fascinating but very hard to make. Rob's animated face card is much easier, but still a great deal of fun to design and do.

In Australia's outback, many have died for lack of water but, as Rob shows, there is sometimes water there if you know where to look, and knowing where to look for it could save your life.

In Australia's outback, many have died for lack of water but, as Rob shows, there is sometimes water there if you know where to look, and knowing where to look for it could save your life.

In Australia's outback, many have died for lack of water but, as Rob shows, there is sometimes water there if you know where to look, and knowing where to look for it could save your life.

Rob shows how the eye works to create a blind spot in everything we see, and how we get the illusion of light simply from pressure.

Optical illusions are fascinating. Rob shows how by cutting and moving card strips of your own you can explore the illusions of how some straight lines look longer or shorter than others of the same length

Deane sets up three problems regarding sliding coins colliding with each other on a tabletop.

Mucilage is the lick-and-stick glue on some stamps, envelopes and stickers. Very useful stuff and, as Rob shows, it is extremely easy to make your own, which will keep for a long time in the refrigerator once you have made it.

If you have to bend paper or card along dotted lines, or make tear-off tickets, this simple perforating tool is invaluable and easily made, as Rob shows. All you need is an something like an old clock.

Deane shows how to make a miniature cardboard duck shooting gallery. It is made from matchboxes, rubber bands, ice cream sticks, matches, cardboard and marking pens.

Vertebrates can look very different but, as Rob reveals, their skeletons all have the same basic form. It can be intriguing to see how those bones are arranges in different feet, wings and flippers.

Deane and Rob explore an amazing technique for building a bridge from ice cubes.