It is hard to use pencilend when whittled down too much, so that it has to be left unspent, which seems like a tiny,
overlooked and universal problem that no one cares. But if
everyone wastes a pencil-end, it will be a huge waste of
nature forest resource by statistic together.
"Without End" is a simple idea that to attach pencil with
a new one when it becomes a mere stump, so the pencil-end can be continued until used up thoroughly without any waste.
The design of "Without End" captures a gear shape structure
at the ends of each pencil, contributing to engage with another
end of pencil firmly. Meanwhile the simple gear form can be
mass-produced as the general pencil manufacture.