How Does a Retractable Pen Work? |
Watch and learn how a retractable pen is constructed, and how its anatomy allows it to function.
The post How Does a Retractable Pen Work? appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.
http://feedproxy.google.com/~r/makezineonline/~3/fL2SSUzncVg/
| Комментировать | « Пред. запись — К дневнику — След. запись » | Страницы: [1] [Новые] |
