The bolt that goes through the lever and into the big gear is threaded directly into the gear, so no heat insert is needed in the big gear. For all the other bolts, you will need a heat insert.
You need to split the model into parts in your slicer.
Hardware | Quantity |
M3x12 | 2 |
M3x8 | 8 |
M3 Heat inserts | 8 |
The author marked this model as their own original creation.