OWL Spacewalker
(Semi Scale Model)
~ LW-PLA/ePLA-LW/PolyLight 1.0 Series ~

OWL Spacewalker Videos and Pictures


Filaments to Print with :

  • Please open “OWL Spacewalker – 3D Printed Part Information” to get suggested filaments to print.
  • Some parts are best printed with PLA instead.

Please note that G-code files generated from ideaMaker does not compatible to use with Prusa original 3D printers. Please use Cura or S3D instead if you would like to regenerate the G-code files for your Prusa printers.

Spar Requirement :

  • Wing Spars, 8mm OD Fiber Carbon Tube with Length 500mm, 2x (left and right wings)
  • Wing and Fuselage Spars, 8mm OD Fiber Carbon Tube with Length 198mm, 2x (front and back)
  • Horizontal Stabilizer Spar, 3mm OD Fiber Carbon Tube with Length 298mm, 1x
  • Landing Gear Spars, 5mm OD Fiber Carbon Tube with Length 128mm, 2x (left and right LGs)

Landing Gear Options :

3 Options are available to setup landing gear parts:

  • Option #1 : with skirt landing gears.
  • Option #2 : with no skirt landing gears.
  • Option #3 : with hand launch setup.

Option #1 : with skirt landing gears.

  • Landing Gear-Base-L # GR4
  • Landing Gear-Base-R # GR4
  • Landing Gear-Top-L # GR3
  • Landing Gear-Top-R # GR3
  • Landing Gear-Bottom-A-L # GR4
  • Landing Gear-Bottom-A-R # GR4
  • Landing Gear-Bottom-B wSkirt-Front-L # GR3
  • Landing Gear-Bottom-B wSkirt-Front-R # GR3
  • Landing Gear-Bottom-B wSkirt-Back-L # GR3
  • Landing Gear-Bottom-B wSkirt-Back-R # GR3

Option #2 : with no skirt landing gears.

  • Landing Gear-Base-L # GR4
  • Landing Gear-Base-R # GR4
  • Landing Gear-Top-L # GR3
  • Landing Gear-Top-R # GR3
  • Landing Gear-Bottom-A-L # GR4
  • Landing Gear-Bottom-A-R # GR4
  • Landing Gear-Bottom-B-L # GR3
  • Landing Gear-Bottom-B-R # GR3

Option #3 : with hand launch.

  • Hand Launch Base-L # GR3
  • Hand Launch Base-R # GR3

Tail Landing Gear Options :

2 options are available to setup tail landing gear:

  • Option #1 : Utilizing rod with 2m OD (left side).
  • Option #2 : All 3D printed (right side).

Option #1 – Assembly for 2mm rod tail gear.

  • Create metal part tail landing gear with 3D printed template. 
  • See right side picture for what parts that need to be prepared.

Option #2 – Assembly with all 3D printed parts.

  • See right side picture for what parts that need to be prepared.

Servo Bridge and 4mm Wing-FL Screw Installation : 

  • 4mm nut holder and  “FUSELAGE-3 # P3_H15”, best gluing this before doing fuselage assembly (see the assembly video).
  • Use hot glue after attaching with CA to secure but use your preferred method to attach anyway.
  • Suggest to use hot glue for quick servo bridge installation.

Dummy Pilot and Pilot Chair Assembly :

  • Use hot glue as depicted right side picture for pilot chair. 
  • Use velcro to attach dummy pilot.

Engine and No Engine Options :

  • Use “FUSELAGE-1 # P3_H15” when using engines installed.
  • Use “FUSELAGE-1 no Engines # P3_H15” when engines are not installed.

Easy Outrunner Motor Access Front Fuselage or Clean Front Fuselage

  • Use left side STL file “FUSELAGE-0-A # N0” so that it is easier to replace and install outrunner motor.
  • For clean assembly, please use “FUSELAGE-0-A use glue # N0” instead.

Warning Regarding Motor Installation :

  • This is seriously critical when installing motor mount ! The Motor Mount wall is already designed to prevent any unwanted move such as sudden pitch down or up when increasing the motor power. The thrust line is designed for certain up or down and also 2 degree right horizontally. The gap will introduce incorrect thrust line causing problem when flying.
  • If your motor can not move freely, try to enlarge the shaft hole on the motor mount and remount the motor right after.
  • If not happy with the default thrust line, feel free to modify it. The motor mount STEP file is provided for you under “SUPPORT\MM” directory. 

Motor Mount Installation :

  • Make sure that Motor Mount facing front side shows “Front” text.
  • “MM Wall for Propdrive & Surpass # MM/MM Wall for SK3 # MM” , “FUSELAGE-0-A # N0/ FUSELAGE-0-A use glue # N0” and “FUSELAGE-0-B # N0” should be printed with PLA/PLA+.

Dummy Pilot :

  • WW2/Classic Era Pilot (H64 x W66 x D35mm).
  • To get the dummy, just click me.

Special Note for Rod Hinges :

  • Please use 1.5mm OD rod for creating all control surface hinges if possible 2mm OD rod.
  • Just prepare both 1.5mm OD or 2mm OD rod to create the hinges and pick whichever best fit.

Center of Gravity (CoG) :

  • CoG is 56.7mm from Wing Root Leading Edge.
  • Start with more solid flying and adjust gradually during the next flight.

Weight and Time Estimation (Under Construction):

Following tables show the weight of printed parts, number of required filament rolls and time required to print. The numbers are taken from S3D slicer calculation. From experience, actual numbers show about between -5% to -10% than depicted in the table. But the number may vary from printer to printer due to:

– Stepper Jerk value.

– Stepper Acceleration value.

– Steps per unit (either calibrated or uncalibrated)

– Extruder quality/condition.

– Nozzle quality/condition.

– Filament quality/condition.

– Etc. 

For sure the relative number are useful when deciding to accept the total strengths or weights when printing. Picking higher strength to some parts are necessary to avoid breaking during high impact landing or sharp maneuver for example.  

Here are the summary tables:

Table of Contents

Update History

No Update for this model yet

Recommended Setup

Tools and Materials

OWLplane Printers (for your ref.)

See figures below some printers used, created, developed and modified by OWLplane. Two group printers are set, the first one is utilized only for printing PLA/PLA+ and the other one is utilized to print with ABS, ASA and HIPS filaments (the one with enclosures). Just hover onto the figures to find more information about them.

Modified all Bowden setup printers into Direct Drive but leave Tevo Tornado and Anycubic Mega as is (still in bowden setup).

Hardware Needed

For Fuselage and Hatch:

For Wings (except the control surfaces):

For Aileron, Elevator and Rudder Servos:

*) Illustration only

Setup for Servo Travel/Throw

Suggested setup for medium travel/thrown are depicted below and you may adjust the setup according to your need.

3D Printed Motor Mount, Propeller Spinner and Collet

Motor Mount Requirement

Motor mount wall should be 3D printed with more heat resistance filaments such as ABS, ASA or HIPS. If your 3D printer does not have enclosure you may want to try with PETG filament (more heat resistance than PLA/PLA+). In case you still would like to use PLA, please do annealing process (not sure can do for standard PLA), some successful with HT-PLA/Hight Temp-PLA. Click here for you to read about annealing article.

Motor Mount
Propeller Spinner and Collet Requirement

OWLplane does not provide STL file for printed propeller spinner due to our concern about strength, shape and uniform weight when spinning at high speed. Not all 3D Printer has really free of skew issues for all their axes. The skew issue generates uneven shape that will lead to problem when spinning. Good spinner should be available in your local hobby store or online store, even that spinner, you still need to balance it before using it.

Spinner and Collet Requirement :

1. 38mm diameter size spinner.

2. 5mm or 4mm shaft propeller collet (check your purchased motor shaft to pick the right size propeller collet).

Please watch the following Videos to balance your Propeller and Spinner:

Assembly Figures

Spacewalker Fuselage Assembly

Spacewalker Wings Assembly

Spacewalker HStab Assembly

Spacewalker VStab Assembly

Spacewalker Hatch Assembly

Spacewalker LG Assembly

Watch OWL Spacewalker Animation and Assembly Video
Please visit the page for having visual learning