15 pens

thingiverse

A customized version of the Thing found at http://www.thingiverse.com/thing:40406 was created using the Customizer tool (http://www.thingiverse.com/apps/customizer/run?thing_id=40406). The specifications used for this customization include a pen diameter of 97, without displaying the pens, an outer dimension of 4, an A2 value of -15, an A1 value of 30, a height of 20, a pen length of 155, a spacing of 4, and a total of 15 pieces. Additionally, an inner dimension of 9 was used, along with a bevel of 4.