Welcome to RepRap.
p.s.: This wiki software seems to work better if I edit a bunch of pages to add a category first, and then much later (if ever) create the actual category page. For example, I've added the [[Category:Paste]] to several pages, and it's already somewhat useful, although it technically hasn't been "created" yet. That may feel a little backwards compared creating Category:Bowden Extruder Nozzle first, and then later populating it. --DavidCary 06:34, 19 March 2012 (UTC)