SPY - Shitty Printable Yagi

Behold the SPY - the Shitty Printable Yagi! This is a six-element Yagi for 915 MHz radios, which are used in North America for LoRa applications among other things. The purpose of this antenna was to make a simple directional antenna to boost my signal out of this electromagnetic holler I find myself in, and it does a fine job though it won't win any DX awards.

Hardware needed:
2x M2 x 4mm heat inserts
2x M2 x 4mm hex screws
2x 16-14 AWG #6 ring terminals
solder, soldering iron, and flux
UV curing superglue/epoxy
permanent marker
metric ruler
coax, shield and conductor stripped for connection
1 meter uninsulated 12 AWG solid copper wire

Printing Recommendations:
2 walls
20% gyroid
1 mm minimum top and bottom
supports on

Filament Recommendations:
Crealty CR-PETG used in photos and for original prototype. ASA/ABS likely a better for more permanent application. Don't use PLA it'll just fall apart with morning dew.

Build
1) Cut all elements to size as in the attached .txt file. While the Reflector and Directors should be one piece, cut the Radiators ~10 mm longer than required.
2) Mark the mid, mid - 10, and mid + 10 marks on the Reflector and Directors
3) insert the radiator arms one into each of the ring terminals, then solder them (crimping isn't good enough here); use flux to help solder stick if necessary
4) Cut each radiator arm down to precise size from the end of the ring terminal to the end of the copper wire. 
5) insert brass hot inserts into holes in the Radiator pocket, careful to keep plastic out of the thread grooves
6) In order from back to front of the antenna: Reflector, Radiator Pocket, Director 0, Director 1, Director 2, Director 3. Feed the Reflector and Directors into their respective through-holes, align so that the +/- 10 mm marks on the wire are on the edge of the boom, indicating centering. Affix with UV curing adhesive.
7) Connect the conductor and the shield of the coax each of one of the Radiator arms by wrapping around the hex bolt and tightening. Use a washer for better connection.
8) Mount the antenna on a pole such that the Radiator arm connected to the central conductor of the coax is pointing upwards.
9) Attach coax to your radio via whatever connector you need.

Tips
-keep all wires as straight as possible
-be as precise as you can with your centering of elements and measurements
-radiators may shift around, check tightness of bolts routinely
-mount as high off the ground as possible
-use coax with low losses around 900 MHz

Disclaimer: this antenna has worked fine in the elements for at least two weeks as of this writing, but there is no guarantee it will work for you. I'm also not responsible for you blowing up a radio, as my radio using this antenna is currently un-blown up. If you don't know what you're doing, git gud then try again.