A few inches is all I need it for, thanks. Basically I just need to use it once in a while to cut a floorboard to inspect beneath it, or to cut the skirting on a bath panel so I can open it.
Yeah that's asbestos, and it was a bad idea to remove it yourself. Like others have said you will have contaminated the whole room, your clothes will be contaminated too.
Looks like fibreboard to me. Made from wood fibres. That's what it looks like in the photo anyway. I'm an asbestos surveyor and see stuff like that all the time. I'm not saying it doesnt contain asbestos though, just in case it does...