Organic Hard Surface Modeling ZBrush trick

Here are some images I made in ZBrush, using a very cool trick that I've been playing around with for a while. I also put together a quick guide about this technique which I've found to be very efficient to produce concepts and flesh out ideas for hard surface modeling projects.

Here is the link:
http://www.zbrushguides.com/organic-hard-surface-modelling-trick/

I hope you find it useful!

Pablo munoz gomez helmet 2 render

Helmet sketch 2

Pablo munoz gomez zbgs organic hard surface modeling rendered

Helmet sketch 1

Pablo munoz gomez zbgs organic hard surface modeling ship sample

spaceship concept sketch