Category Archives: Consult the Doctor

Consult the Doctor Episode 36

With today:
00:10 Why do ballpoints don’t come with caps but rollerballs and fountain pens do?
01:55 Should pen manufacturers make their own nibs?
08:30 Is it possible my nib has baby’s bottoms?
09:15 The intricacies of one-way shut-off valves (dry feeds, opening the valve)