
Personally, I hate the plastic horns that come
with servos; they’re almost impossible to
work with. Instead, we’ll use nice metal horns
that have easy-to-use, threaded M3 bolt holes
(Figure
H
) at 12mm, 16mm, and 20mm. These
are generic pieces that multiple manufacturers
make; if you search Amazon for “metal servo
horn” you’ll find a few different brands that look
just like this.
The print files are designed with this specific
metal horn in mind, but the STEP files should
let you change things up if you need to move the
mounting holes on the project around. Having
threaded mounting holes on the horns is a must!
Make sure each servo is centered ...