AR15 Bolt Face Spinner

thingiverse

The spinner resembles an AR15 bolt face, crafted from two printed halves that are bonded together. Its asymmetrical design benefits from hollow sections, which provide stability due to their balanced distribution of mass. The end caps, shaped like bowls, consist of two parts that are joined with glue; after assembly, a small amount of black paint is applied to the central area of each cap, simulating a firing pin hole. Assembly requires careful preparation: first, remove any residual adhesive from the print bed, then lightly sand both surfaces. For the end caps, gel super glue proves effective. However, when bonding the two body halves together, super glue sets too quickly; therefore, a thin layer of clear epoxy is applied, accompanied by four clamps – each exerting pressure equivalent to two fingers squeezing together. It's essential that a bearing be installed in one of the spinner body halves prior to gluing the parts together. To achieve this, the bearing is inserted into one half, followed by a thin layer of epoxy applied to both halves. The halves are then aligned properly, secured with clamps, and any excess epoxy is carefully wiped away.