This was touched on a little in an unrelated thread a few years back but I'm dusting off the topic.
Just recently got a couple of my favorite guitar back up to 100% and one of the things I've been lacking for a while was a good working trem and whammy bar. Being someone that focused primarily on metal most of my life, I think I got the EVH, Dimebag and Alexi diveboming down pretty well. Never really occurred to me to use the tremolo for, you know, actual trem/vibrato stuff until recently.
So anyway, I dedicated the last couple noodle sessions specifically to trem work. It's definitely an under appreciated technique, considering vibrato with your fretting hand only really give you your note+sharp where as a vocalist can oscillate sharp AND flat in a vibrato. Anyway it always eluded me, the biggest issue was that I always assumed you just grip the whammy bar hard with your picking hand and try to move it up and down in perfect pitch but it always felt jerky and inconsistent. The technique I developed the last few days, I have my hand open about the size of a quarter with the whammy bar in the center, and I'm moving toward and away from the guitar at the speed I want my vibrato, so there's a gap between basically 'bumping' either side of the trem arm that seems to make the pitch and speed more consistent rather than feeling like I'm fighting the spring tension.
I hope that makes sense.
Anyway, anybody else using they bar for vibrato at all? Any tips on technique or how you have your guitar setup?