## Click pen: How it works
This animation shows the mechanism of a click pen. The cutaway view is a replica of [Pentel’s click pen](https://skfb.ly/SRCn) ref. BL107-F (“EnerGel” orange, ball diameter Ø 0.7 mm).
Model animated in *Blender* using [this other animation](https://skfb.ly/SZFL) as a starting point. [Spring deformation](https://youtu.be/MhNMwUenh3w) performed using [Shape Keys](https://www.blender.org/manual/en/animation/shape_keys.html).
🎬 A [video showing this animated model](https://youtu.be/UbgO2sfWzNg) is also available on YouTube (and on [Vimeo](https://vimeo.com/184740297) as well).
![](http://c.yamahata.fr/images/click_pen/click_pen_cutaway_view_KeyShot.png)
![](http://c.yamahata.fr/images/click_pen/click_pen_close-up_view_KeyShot.png)
*Examples of PBR renderings obtained with Keyshot 6.1*