I wanted to come up with a quick 3d pen sketch, so what better subject than a small bird? Using PLA as my material, I drew this bird with my old LIXPEN. I discovered PLA is way softer than ABS, and it comes in many different textures such as bronze and wood. Sketching this bird took less than an hour.
My next 3d pen sketch took way more time, and it included different articulations, check it out here.