Thingiverse is a swap meet for exchanging digital files for 3D printing of tiny objects, like the stuff for doll houses. You download a file and print out the object using a the previously reviewed Makerbot or 3D printing service. Eventually, the objects will be larger, and the selection larger, and you’ll be able to print out complex things. For now, 3D printing is a thrilling hobby, and this exchange site is a real tool for model makers.
A cool tool is anything useful that is superior to comparable items. If you think this tool is inferior suggest a better one. You are welcome to insult a tool, but comments containing insults to individual people will be deleted. Corrections of fact are always welcomed, if stated politely. Recommendations of better tools are dearly wanted and may be elevated to the front page.