On 21/07/2005 5:17 PM, Andy wrote:

What's the difference between a "Rust Eraser" and a normal (3M/Norton)
foam sanding block?

The 'erasers' have abrasive right through. I don't think the 3M blocks
do, although I've never used them. Aren't they soft, effectively
sandpaper bonded to a piece of foam?