4'' plus quadcopter frame

This is a frame for a plus configuration 4'' quadcopter.
I can be printed with separate arms or the whole bottom part in one piece (frame.stl)
The arms interlock so there is no need for a bottom plate.

You can buy a carbon version of the frame on ARMATTAN
https://armattanproductions.com/pages/product_details/19721

Limitations:
20x20 stack only (2 layers with 6mm standoffs)
12x12mm m2 hole pattern motors only (most 13XX, 14XX, 15XX, 16XX)
max motor base radius 21mm

Can fit a full size 28mm wide camera, or micro camera with backpack VTX (recommended).

Required hardware:
4x 20mm M3 (you can use up to 40mm if you want to build your stack on them)
4x plain M3 nuts
16x 8mm M2
6mm M3 standoffs

Build recommendation :

***Budget version***

Kingkong 4045 biblades
https://www.banggood.com/custlink/3vGvd4QWsV

4S 450 or 650mAh

Racerstar 1306 3100KV
https://www.banggood.com/custlink/vmDDYBncQZ

Noxe F4 flight controller
https://www.banggood.com/custlink/DvDGd