Thin Solid Body Guitars
Saguaro thin solid body guitars have an aluminum block inside the body.  The block allows the bodies to be wedge shaped such that the heel is only three  tenths of an inch thick, allowing better upper fret access.  In addition the block adds sustain and with additional shielding inside the guitar reduces hum or 60 cycle noise normally picked up by single coil pickups.  Look around and see what Saguaro guitars are all about.