This object was made in Tinkercad. https://www.tinkercad.com/things/3pAEdru7k8t The flying wing with fpv stl file is for demonstration only. It is likely too large to print on one print bed. Use the files as specified below. #Tinkerfun
The assembled wing is 40cm (400mm) using 2 printed parts. I was able to print each wing diagonally on my Monoprice Maker Select 3d v2.1 printer that has a 200mm build plate. I covered the wings with packing tape and used foam plates to cut out winglets that I drew freehand. The control horns were scaled down (75%) from these: https://www.thingiverse.com/thing:631566. The CG is just behind the box that holds the receiver brick. The receiver brick and motor are attached using hot glue.
I've successfully flown it using the Flysky module and the T8SG tx. Update on flying: https://youtu.be/xKoQQ9WZUiY. I got a new module for my tx so no more drop outs. Adjusted controls including rates at 60/80/100. First flight: https://youtu.be/XcJzG3stfik
The assembled wing is 40cm (400mm) using 3 printed parts. It also has a holder for a camera, has built in control horns, and pushes the cg forward a little more. Print the three pieces. (yellow and red in photo). I recommend a dab of hot glue where the control horns and the camera mount meet the plane body.
Receiver brick (servo and receiver combo)
If using the v911 setup:
V911 receiver brick includes servos: https://www.banggood.com/WLtoys-V911-Helicopter-PCB-Board-Spare-Parts-p-77849.html?p=@T25030878732012108C or https://amzn.to/2xtC6XQ
OR f949 version:
f949 receiver brick includes servos: https://www.banggood.com/WLtoys-F949-Airplane-Spare-Parts-Receiver-Board-p-959681.html?p=@T25030878732012108C or https://amzn.to/2xsmSCj
Main motor: https://www.banggood.com/WLtoys-V911-pro-V911-V2-RC-Helicopter-Spare-Parts-Main-Motor-p-913609.html?p=@T25030878732012108C
The Spektrum is about twice the cost, but if you already have the transmitter, it might be cheaper in the long run. https://amzn.to/2N4WFNd
Or older version: https://amzn.to/2J3aev1
Cheaper transmitter, but limited to just Flysky receivers (works with either F949/V911):https://www.banggood.com/FlySky-i6-FS-i6-2_4G-6CH-AFHDS-RC-Transmitter-Mode-2-With-FS-A8S-8CH-Mini-Receiver-p-1157144.html?p=@T25030878732012108C
For those looking for help doing the electronics or flight, check out the thread on RCGroups: https://www.rcgroups.com/forums/showthread.php?3025260-Micro-3D-printed-flying-wing.
An 8mm motor should be fine using a 65mm prop.