To do direct animation on clear super 8 mm film, can i just bleach some old film?
No, the gray and black light-sensitive chemicals are embedded on the film media and won't simply wash off or &quot;turn clear&quot; in bleach.
What you are trying to do is known as Draw-on-film animation, but I've also seen it referred to as cameraless animation, clear leader animation, marker animation, scratch film, and direct animation. I enjoyed trying this in my early experimental-film days. It was a lot of fun and you can create some interesting experimental media projects using various techniques.
Draw-on-Film Animation Media
Typically you start with clear film leader (comes in acetate, polyester/mylar) where you essentially draw or paint your animation frame by frame. Folks also scratch animated pieces into black exposed film and (optionally) add color later. Folks have even added hand-drawn animation over traditional black &amp; white films, so if you have some footage available to you, that's an intriguing option.
Here are some examples and techniques to help get you started:

YouTube (instructional video) : How to do Animation by Drawing on Film
Exploriatium (Instructional PDF): Scract Film: Direct Animation
YouTube (amazing example): Process of making direct animation
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