This is part 2 of posts on Designing BAFS. If you haven't read Part 1, please read it here.
Modularity
Disclaimer, I'm not a designer of any sort, just by reading the basic concept of modularity already gave me a headache.
Anyhow, I just wanted to start small, like start with 2 filaments, and if it works, I can add more. So I split everything. BAFS has 5 main components:
Start Mount, this part serve two purpose, as stepper motor mountings and first mounting of the whole unit.
End Mount, also two purpose, as second mounting of the whole unit and holder for the end of the shaft.
Odd Extruder
Even Extruder
Spacer
Start and End Mount
First thing first, like most other bed swinger, A8v2 mounts the extruder on x-axis, it moves along z-axis. So, it won't do to have BAFS on the same spot. With this kind of printer the only option is to have it mounted on the top bar.
Odd and Even Extruder
This separation is needed to make it more compact. Lining up on just one side will make it longer and heavier without any benefit, well, not that I can think of. It might help with heat dissipation, but this is an open design, so I don't think it'll matter that much.
Spacer
You must notice there are space between the second extruder and the third on the image above. That's because the servo motor on every odd extruder, except the first, will hit the even extruder before it.
And we have all the parts.
That is it for now. I will explain more on part 3.