Adding a third dimension to sketches with a 3D printing pen can bring a whole new layer of fun to doodling. But as we discovered for ourselves last year, it's not as easy as company reps make it look.

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Foundation is the unicorn of cosmetics - it is fabled that there is a colour to match every skin tone, but actually finding such a thing is a seemingly impossible mission. Now, a 3D 'printing' device ...