Makerbot has been up to some shenanigans lately. http://www.fabbaloo.com/blog/2014/5/25/has-makerbot-crossed-the-line-for-some-yes I'm dissatisfied that Makerbot trying to capitalize on community designs while blocking further progress. http://www.youmagine.com is a good alternative to "Makerbot" Thingiverse. Consider making this object and posting the image under makes.Print the bottom 10 mm in black and the top 2 mm in red.