Robust Pen Holder for Drawing Robot

cults3d

This is a more sturdy pen holder for an Arduino drawing robot, designed to be printable in an upright position without supports (resulting in a stronger print when done correctly). Previously, I was using this design, which worked well initially:\nhttps://www.thingiverse.com/thing:2058866\nHowever, after a while, the pen holder broke as shown in the picture (likely due to inadequate fill, poor layer adhesion or rough handling), prompting this new design that should be more durable. Only time will tell.\n\nThe original drawing robot design is here:\nhttps://www.thingiverse.com/thing:1517211\n\nThis requires an M3 screw to secure the pen (I'm using an M3 x 20mm socket head cap screw, which works well). It's helpful to wrap a turn of insulation tape around the pen before tightening the screw against it securely.