This scraper is designed to scrape the loose (and semi-loose) processing powder out of the maze paths of my maze puzzles. [http://www.shapeways.com/shops/amazing]
Youtube video: http://youtu.be/9LXA4sTOLhg
The scraper in WSF material will work when you handle it gently and use a small metal tool (screwdriver) when you find a part of a maze path blocked. The scraper in stainless steel is more rigid, and can scrape blockages from powder directly clean.
This tool is sold without markup.