ArtfulBodger.net
This is an adjustable angle plate I had handy. Its surface was battered, so I scraped it down. I was pleased with the results, though the job took a long time.

It's hard to tell from the thumbnails what the surface looks like. The bigger pictures show it up a lot better. Big...

A closer view. Big...

Closer still. It's hard to catch in a photo, but the surface had a beautiful look when I had finished.

Anyway, that's how it looked to me. A professional scraper hand might say otherwise. Big...