I spent some time this last week making the center frame plates and assembling the main frame components. I took some pictures while doing it so you can see the process.
Here is the bottom side of the the motor attachment point. The motor is held on by 4x #2-56 steel socket head cap screws. On this side you can see the nuts which the screws thread into to hold everything together. Once I am sure everything will work, I will be applying glue to prevent these from coming loose in flight.
All of the arms are assembled. One of the arms has been attached to the main plates. I used 4x #4-40 nylon pan head screws to attach the arms. I went with nylon as is it is much lighter than steel and I don't need the strength of steel since the arms will be glued as well once I attach everything else. The screws are threaded into nylon nuts on the far side.
With the frame assembled, I placed it on a scale and stacked all of the other parts on top of it to see what the final flying weight will be. Including the battery, the scale read slightly over 1lbs (500g). This is the target weight I had in mind when I started designing this thing, so I am happy to be on target.
That is all for now. Let me know if you have any questions.
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