Hello, I need some information on how to obtain spin-on polyimides (vendors, manufacturers, etc). I am looking to deposit 5-15 micron thick films. Also, does anyone have any experience with via formation in polyimides using the laser ablation technique. I need to fabricate vias with tapered sidewalls (i.e., top via pad is larger than bottom via pad)... Thanks for your help, Avinash Kane Raytheon Systems Company askane@west.raytheon.com