Addtional hardware required, 2 x M3 nuts, 1 x M3x12 bolt foe holding together the 3 pieces of the model and 1 x M3x14 bolt to pinch the model preventing the chalk from dropping out.
The author remixed this model.
Adjusted belt clip to avoid snagging on belt. Reworked how the parts locate into each other for a more sturdy assembly.