Blender gear
cults3d
My blender broke, here is a replacement gear. For full details please see this article: http://blog.arcol.hu/?p=1699 I dont know how many blender has these design, maybe the cheaper ones...
Download Model from cults3d
With this file you will be able to print Blender gear with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Blender gear.