Hose Clamp
thingiverse
UPDATE: Wasn't thrilled with some of the teeth, so went back through the process to refine them and simplify the mesh even further. Latest version is clamp_remix2.stl Remixed just to clean up and streamline the mesh a bit more. Started with an SVG file, workflow was: GIMP, Inkscape, Blender. Set the z-depth to 5 mm (compared to ~6.4 mm in the original). This will fit snugly around 3/4" OD tubing. If you're using it to secure a hose barb, it may need scaling up (~105%) for a good grip. It's surprisingly secure, but I wouldn't trust it with critical applications.
With this file you will be able to print Hose Clamp 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 Hose Clamp.