Easy to build with laser cutting (or with an x-acto knife) and fun to use, you literally "stab" the pencil holder with your drawing/writing stuff! Submitted by DIN 2012, Université de Montréal, industrial design program, for the Instructables Sponsorship Program.
You will need:
1 cardboard sheet of approximately 385mm (15,16 inches) of height and 590mm (23,12 inches) of length. (I found mine in the recycle bin and adjusted it to fit inside the laser cutting machine)
1 4 inches long bolt with a diameter of 3/8 inch
1 3/8 inch nut
1 3/8 inch washer
The illustrator file provided with the instructable for the laser cutting machine (there's also a pdf version
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i am thinking to try this but with number of thin polystyrene boards