I made this concept “art” in photoshop to illustrate and shorten the description
just to make you understand, its a big drill 
i’ve tried everything, but i cant seem to get a decent looking drill, 
i want to know how to model this drill in blender (also… i want it to look badass-ish :D)
i’ve tried with the screw modifier, but no luck…
thx in adv.