Dr Shaneman wrote...
They died a death here years ago because of how easily the led snapped. No wonder I forgot about them.
Last time I saw one I was 10 I think?
They kinda died, but my professor who teaches Technical Drawing (Low level engineering schematics) prefers to use mechanical pencils. Says that it keeps the 0,3mm line a 0,3mm line, and allows more precision. Then again, his mechanical pencils cost 10€ a piece. ( mine costed 1-2 €)
Regular pencil tends to change line size as you work.
It is a bitch to get proper led. HB is cool if you want to make some lines on a draft.
B makes life easier and the schematic look pretty.
I know only one shop in estonia that sells 0,9mm B leds.