Summary

V3 AVAILABLE HERE : https://www.thingiverse.com/thing:4943803

Wasn't able to find perfect (for me) light freestyle frame so I designed one
Last update : 5.27. 2021 : added V2 parts

On photos : 6.1" Azure power props, toilet tank style mounted 1300mah 4S battery, GoPro Session 20° airbag mount

Features :
Light yet very durable freestyle / racing / LR frame
Super easy to build and maintain
Smart and light weight antenna and camera TPU mounts
Balance spikes in the middle of top plate - find center of mass quickly by holding quad at these points
Extra screw hole in the front for various action camera mounts - 3xM3 screw for HD camera mount in total

Frame weights 82 grams : fully assembled - 5mm arms, 3mm top and 3.5mm bottom plate
I used M312 screws with lock nuts for the arms and 20mm standoffs, M38 for top plate

• Current TPU camera and antenna mount adds 5 grams = 87g total

Fits 20x20mm stack
30.5x30.5mm M3 (2 screws only) mounting pattern on top plate for mini VTX
*(you need to mount it a bit from top plate so your lipo strap for toilet tank style mounting will fit too)
14x14mm nano camera (19x19 micro camera fits too - needs different TPU mount)
16x16mm M3 motor pattern (Standard 220x / 230x pattern)

You can order carbon parts (bottom + top plate + 5x arm) for cheap from sites like aliexpress, some stores can cut them for you, I ordered from SENLAI Store - very nice carbon quality and price was only $27 shipped.

Also I ordered 3x 50pcs M3 screw (8,12,14mm) + 25x M3 locking nut + 50x M3 slim nut (for VTX) + 10x alu M3x20mm standoffs for $11 shipped

*(If you want to make build easier, choose M3x25mm standoffs for more clearance inside)

Total price - lot of spare hardware included : $38 shipped (+ optional standoffs color)