20 pencils
thingiverse
A personalized version of the design found at http://www.thingiverse.com/thing:40406 was created using the Customizer tool (http://www.thingiverse.com/apps/customizer/run?thing_id=40406). To print this custom object, follow these steps: set outer diameter to 4, height to 20, inner diameter to 9, a2 to -15 and a1 to 30, spacing at 3, bevel of 4, pen length of 155mm, show pens as "no", create 20 copies with a pen diameter of 70mm.
Download Model from thingiverse
With this file you will be able to print 20 pencils with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 20 pencils.