Another wednesday another tutorial

New material about how to draw perspectively correct cylinders for rpg graphics, illustrated with 11 diagrams.
This time I use an slightly enhanced design and it's all about a very technical content. Also some knowings of maths don't hurt. Examples will follow in the next part, because otherwise it'd have been too long.
If you don't understand something you maybe missed the older parts.
links to the other parts:
part 1
[link]part 2
[link]part 3
[link]credits: "notfunny" font (header)
pretty nice.