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 ...
They were inspired by classic picture-drawing automatons ... aluminium and driven by two stepper motors. An ordinary ballpoint pen is held in a spring-loaded carrier, which provides just enough ...
当前正在显示可能无法访问的结果。
隐藏无法访问的结果