Try experimenting with different colours of ballpoint pen to create layers of texture. Light-coloured felt tips can easily pick up darker colours from a drawing surface. This can be avoided by ...

A drawing by Rene Magritte showing giant chess pieces in a landscape, bought on eBay for $1,580, comes to auction at ...

Over the decades, a lot of attempts have been made to try and make pens and pencils “smart”. Whether it’s to enable a pen to also digitally record what we’re writing down on paper, to ...

An ordinary ballpoint pen is held in a spring-loaded carrier ... which uses Canny edge detection to create an outline drawing, then fills in the empty bits to create bright and dark areas.