Hello Everyone! This is a replacement 3D printed sight for the Koosh Vortex Tornado.  The Tornado is famous for many things in the Nerf hobby, one of which is that the blaster's yellow sight is notoriously easy to remove. Naturally, used blasters often are missing this piece, which is quite a shame, because not only does the sight complete the smooth curve at the top of the shell, it also balances out the color scheme of the blaster.  A printable replacement has been on my list of projects for a very long time, and when I found a shop near me that could 3D scan the part, I jumped at the opportunity to get it scanned. 
 

My original goal was to use the scan as reference to rebuild the part in CAD, but I quickly discovered that the shape was much more complex than I had originally thought. I put the project on the back burner for a while, but eventually decided to just try printing the mesh file I received from the scanning company. To my surprise, it printed great! I added a flat to the base so that it would print even better, and I chose an angle that allows the part to be printed without support. I’ve included both the original mesh file as well as the version with the flat in the file set.  I still intend to eventually remake the part in CAD once I improve my skills, but I wanted to make these versions of the part accessible seeing as they are serviceable in their current form.  

This model is nearly an exact copy of the original Koosh Vortex Tornado Sight, so hopefully it is a close enough imitation for those who are interested. I had tons of fun working on this project, and I hope everyone else enjoys it as much as I have!