Hard disk material

[Jules Richardson]

William Donzelli wrote:
> It looks like sometime in the future I may need to rebuild a damaged
> magnetic drum. It has some scratches that may be too deep. As a
> brainstorm, I am wondering about recoating the surface. If I use
> refined iron oxide, what would I use as a fixer (glue)? What was
> typically used on early hard disk platters and drums?

Seriously? Do keep us posted... far as I know, it's not something that 
anyone's ever tried before - it'd be interesting to know how you get on. I'm 
not even sure how you could coat a drum in glue / oxide and get it of uniform 
thickness without specialist tooling.

I've heard of low-speed, low-capacity homebrew drums before, but it sounds 
like you're hoping to rebuild a commercial one...

cheers

Jules