Hello, as far as I know (not that experienced but bend almost 20 pieces now) Made a circuit bend SA6 with only 6 bodycontacts for glitch choas and 2 pushbuttons for other glitch. As I was further poking around a managed to break the batteryconnection i guess internally because can't run this synth with batteries anymore, so now I always use my ac adaptor with the bodycontacts. I know it's not that safe cause after playing bodycontacts for about 30min you can really feel it in your arms (i do) I Think that voltage from current is bad an not that filtered enough, it brings crap with it, so batteries are in my opinion way better, but expensive cost when it comes to circuit bending, testing, sampling,etc.
work for the future: my first speak 'n read, Yamaha shs-10, Alesis HR-16, Casio MT-540, realistic reverb, Casio Pt10, VL-1, Sa1, SA100,SA10, and all those weird clonekeyboards out there..
Collecting things is easy:) but finding time to bend this all is another question:)