rod, rounded end, flat for printing, customizable, optional head

This is a customizable cylinder with rounded ends and a flat to provide adhesion and eliminate excessive overhang.  The overhang angle, diameter and length between radiused ends are all customizable.  A configurable head is optional.  

The flat provides for horizontal printing and an accurate diameter.  The horizontal printing aligns the perimeters along the length of the part, providing strength and flexibility. 

It can be used as a pin, shaft, peg, rod swizzle stick, or component of other assemblies. 

The OpenSCAD code has an array feature, so you can mek a set of pins with different sizes.