Horizontal Gear Meade DS-2114 AT-TC

I've created this thing to substitute the horizontal movement gear of my Meade DS-2114 AT-TC telescope.
Only the locking black part broke, but it uses a really thin thread, so I decided to create a part that would substitute the gear and all the related parts.
The part was created on FreeCAD and the original file is here as well, if someone needs it to adapt to a different telescope.
The Gear part itself was adjusted on OpenSCAD, remixed from this thing: http://www.thingiverse.com/thing:15165