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Unicorn Horn by videan42 is licensed under the Attribution - Creative Commons license.
© 2011 by videan42
Instructions
I wanted a horn about 8 inches high, so I printed it in four pieces. I managed a 1/8th scale print as a single part, but it's basically too tall to print as one piece.
Here's what I did to print the horn.
1. Print the unicorn_horn_print.stl file. If you're really brave and your table doesn't shake like mine does, you might be able to get away with printing unicorn_horn.stl
2. Break off the bridges between the parts. A hobby knife helps to remove the ridges.
3. Sand the top and bottom of each piece flat. My printer curls the edges on the base pretty obviously, so it helps to sand the middle down a bit. Try to get the pieces flat and parallel or the horn will come out crooked.
4. Align the parts. The horn has a counter-clockwise spiral and the ridges from the print supports can help align the horn parts.
5. Superglue everything together. I pressed each section together, then let it set for ten minutes. Any gaps can be filled with superglue, which melts the ABS together and produces a nice finish.
After a little sanding, the horn looks pretty good.