Weel, it's been awhile. Here are some thumbails for a mech design Im working on. The method is a modified version of an Andrew Jones techinique I saw. In this example, its ink splats from a brush pen, scanned and mirroerd on theselves. its good for random shape creation.
The next step is to draw on to p of these things and bring out the volumes.
Also, I am almost done with my current sketch book, so expect some scans from them soon! Cheers!