Microtone Scale Guitar
I've got a technique that will turn a regular scale length guitar
into a Microtonal scale. First, you need a pick with rough texture on
its edge. This can be the pick design such as a stone pick or you can
create your own texture with a nail file. Second, select the rhythm
pickup. Thrid, using the rough edge of your pick scrape the string
behind the pickup but before the bridge. This shorten the scale
length. My suggestion is to find the fifth interval of whatever
tuning your using (on the high E in standard look for the B) Fourth,
use the pick as a bow and fret away as needed. All fretting will be
reduced to a scale length shorter than the Western half step/Whole
step system thereby creating a more Far Eastern tone. It rocks with
distortion and either a phaser (preferably a Mutron BiPhase or the
underrated Boss Auto-Wah. Next time I'll attach a wav. file.
PS: Pick up a copy of Mick Goodrick's The Advancing Guitarist. He totally encourages this type of unorthodox playing along with theoretical improvising techniques.