TomD
Or alternatively form the end square with a small bevel on the down side. This gives a little more control in some cases. That is what I meant by like an engraver (google it). You can also sharpen it essentially like a domed scraper with curve to the end this will cut in deeper.

Hard to find the right thread for scrapers since there are so many types. Forrest Addy is a good source of info.

Or this kind of thing:

http://www.practicalmachinist.com/vb/general-archive/home-built-scrapers-77579/

All that said, I think for wood planes a float is better, but as mentioned one is just removing wood there are always many other ways.