ZBrushCentral

Hard surfaces

Hi guys,
i get insipred from you and now im trying to make more models in zbrush, but i will like to make some hard surfaces.
Is there any DVD, Video or Webpage tutorial that show how to model some hard surfaces with zbrush?
I took a look inside the thread from Sebcesoir, but i didnt understand how from such low res mesh could be have a hard edge/surface like he posted.

I will appreciate if anyone could send/give me advices.

Cheers,
XBO

@ Sebcesoir,
awesome work.