Yes, even this design can be a FREE download once I am fully funded for my RoboGuts™ S.T.E.A.M. Education Program Kits;

IF each viewer donates just $5 I'll be funded almost overnight and then all my designs become FREE downloads!  

The fastest and cheapest way to get all my .STL files FREE is to donate $5 to help fund school materials ... once I have $3,500 I'll convert all these files to FREE downloads.   https://www.gofundme.com/roboguts-kits-lessons

A better design that is more generic and stronger and easier to use comes  with the RoboGuts™ Intelligent content for 3D printing making a S.T.E.A.M. education easier & cheaper  http://www.R2Pv1.com/

Summary These are "miniServo" brackets for basic Pan&Tilt. I've tweaked all the files I hope people to enjoy using them. Please also visit: http://www.Brainless.org/ for more robotics projects. This was an entry to the makezine.com/go/makerbot contest ... blog.makezine.com/archive/2010/04/makerbot_giveaway.html Instructions MakerBot one and give it a try ... let me know how it works! Send me a dozen kits! If you successfully make this with a 3D printer please send me the build-file and machine type so it can be uploaded here for others to use.