For years I've searched for a power tool intended specifically for removing old window glazing. Never found one. There's a drill attachment made for this, but it doesn't work worth a damn. It has a plastic part that rapidly wears out and its hard to control. Possibly a small, light, soft-start minature router with adjustable roller guides for both depth and x-y position might work. I have hundreds of French panes to reglaze. I'd pay big bucks for an efficient tool like this. If Ridgid would make one, I know it would be the best!