A pencil sharpener that creates a never-ending pencil (2015)

The beauty of the current design is that its simple to make, simple to repair and guaranteed to work even when you're shaving past the joint. It's one of those situations where a "worse" solution actually covers all the edge cases better.

Most parts using wood bits nowadays are either enclosed and there is no tension that would make the bits get out, or the bits are seconded by metal pieces that actually maintain it all together.

Drying up in the bottle is an issue too :(

I am not very artistic so never got into drawing or sketching, I do understand the stroke width point though, my school required us to use fountain pens (as a left-handed person, it's probably the the single biggest reason I've avoided hand-writing ever since, what a nightmare!).

I use a Uni Kuro Toga Roulette I got from Japan for measurements and technical drawings I do at home, but I don't do any of that professionally to say how good it is. The key point for me is that it's always sharp every time I reach for it.

I have wooden pencils but when I grab those (infrequently, usually for marking wood or walls etc for DIY), I find they need sharpening, and some times the end isn't pointed enough to mark a wall through a screw-hole. I use them infrequently enough that I rarely bother sharpening them after I'm done, and they get thrown in a drawer or tool box as-is.