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User Guide
Fully 3d printable
Piper Pawnee
scale ~ 1:8.8 wingspan 1.24m/48in
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rev. 2017/12
... print your plane | www.3DLabPrint.com
Piper Pawnee – fully printable R/C plane for your desktop
3Dprinter
Future of flying - Print your own plane.
Our never ending developement process brought us to this so far biggest project, again full
of improvements for better durability, easier assembly, better geometry solution and so on...
We hope you enjoy printing, building and flying, although this build will truly test your abilities and your printer quality.
Welcome to the thin wall printing!
The first fully printable airplanes with files prepared for your 3Dprinter, with
flight characteristics, comparable or even supperior to classic build model airplane.
This is not a dream, now you can print this HI-TECH at home. Simply download and print
the whole plane or spare parts anytime you need just for a cost of filament only about $20
for 1300g/36 oz
Extensive hi-tech 3d structural reinforcement making the model very
rigid while maintaining a lightweight airframe and exact airfoil even it’s just a plastic. This
perfect and exact 3d structure is possible only thanks to additive 3dprinting technology. So
welcome to the 21st century of model flying and be the first at your airfield.
Easy to assemble, you don’t need any extra tools or hardware, just glue printed
parts together and make pushrods for control surfaces. The rest of the assembly is very
easy. Simply add brushless motor, ESC, servos and radio system. Don’t worry, detailed step
by step PDF/VIDEO is included.
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General specifications:
Length: 968 mm / 38,1 inch
Wingspan: 1240mm / 48.8 inch
Height:
380 mm / 14.96 inch
Wing area:
26.66 dm2 / 2.87 sq ft
Wing loading:
82.5 g/dm2 / 26.8 oz at sq ft
Center of gravity: on the joint of wing parts
Airfoil:
3DLabPrint SPT508
Weight of all printed parts:
1300 g / 45 oz
Takeoff weight (6s 2700mAh Li-Pol): 2200 g / 77 oz
Max takeoff weight:
2500 g / 87.5 oz
Never exceed speed, VNE:
110 km/h / 68 mph
Design maneuvering speed, VA: 80 km/h / 50 mph
Stall speed, VS(full flaps):
38 km/h / 23 mph
Performance measurement:
Max speed VH (level flight):
Rate of climb: 90 km/h – 48 kn – 55 mph
28 m/s (5 500 ft/min)
Flight time (6s 2700mAh): 12:00 min (+30% reserve)
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Included:
1. STL 3d files
Universal STL files designed for use with desktop FDM 3D printers and slicing software such
as Simplify3D (highly recommended), CURA or MatterControl (our STLs are not compatible
with Slic3r or Makerware slicers).
2. Factory files for Simplify3D slicer
with all our settings, these Factory files include all you need. Note: we use PRUSA i3 ORIGINAL
printers so you may need to adjust the basic printing parameters to match your printer or use
it as a starting point for you. Please take a look at Simplify3D
3. Step By Step PDF/VIDEO userguides
Apart from this userguide, please take a look at the Printing Guide on our website with some
Tips and Advices for airplane printing (Thin Wall Printing).
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4. Gcodes
Basic Gcodes prepared for direct use, as universal as possible. It should work with Prusa i3
style printers. You could try to use them, but We can‘t guarantee compatibility with your
printer.
Gcodes are 100% working with PRUSA i3 ORIGINAL 3d printers. You could always amend the
starting script, temperatures and other values accessible from menu of your printer.
5. Prepared settings for CURA and MatterControl slicers
If you don‘t like Simplify3D for any reason, there is always the possibility to use another free
slicer. You can use our basic setting (setting files) as a start point and alter according to your
need.
6. Scale markings PDF
Cut this PDF from thin self tape advertisement foil and place it on the model as needed.
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Centre of Gravity
Wing area: 26.66 dm2 / 2.87 sq ft
Lenght: 968 mm / 38,1 inch
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Wing span: 1240mm / 48.8 inch
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Step By Step PDF/VIDEO userguide (please watch all videos)
1. Choose airplane at www.3Dlabprint.com. Our Facebook for live information.
Basic requirements to print Piper Pawnee are 195/195/150mm
build volume, recommended nozzle size 0.4mm (alternatively
0.35 - 0.5mm), heated bed is very recommended.
PLA filament (or PETG, APLA, htPLA, PC-max.... not ABS) and
some flex for tires...
If unsure you meet the requirements, you can download and
try to print test part from our FORUM (usualy the biggest part)
2. Create account, download
You‘ll receive the download link for all zipped files via email, or you can download directly
from our website after login to your account, created automatically on checkout.
3. Gcodes preparing
option A - Gcodes
You can use the precompiled gcodes if your printer is compatible with Prusa i3. Simply save
each file to SD card and let 3d printer do it‘s job. For best layer adhesion is the HE temperature
set to 230°C. You can edit speed and temperature through your printer LCD or add a custom
start script to the beginning of the Gcode if needed. Please proceed with the other options if
the precompiled gcodes doesn‘t work for you.
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option B - FACTORY files for Simplify3D (highly recommended)
We prepared all you need in thess files (basic FFF profiles, parts layout, and so on...)
You can use our setting as a starting point and edit according to your printer needs, print
only the spare parts, etc... It should work as it is for most printers, but please go through the
settings and edit it as needed. We are not liable for any damage resulting from the use of our
settings. If for any reason this does not work for you, please proceed to the next option.
option C - Simplify3D manual setting (watch and learn)
Use our VIDEOGUIDE to build your own factory file. This is a very good option to learn a lot
about Simplify3D and become a 3D expert. Of course you spend a lot of time and the youtube pause button will become your best friend. For simplification we show only our basic
setting (wings and fuselage), please use our prepared Factory files as a reference for the rest
of parts, like motor mounts, control surfaces, etc.
AND... please watch our VideoGuides:
video 2 Simplify3D setting
video about Thin Wall Printing
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option D CURA or MatterControl (considered as the last resort, we recommend Simplify3D)
MatterControl and CURA are free and provide good results. The airframe is still strong
enough, but don‘t expect the best quality. Both slicers lacks some very useful features, and
finer settings, like multiple processes according to Z height, retraction options, layer start,
etc. Please try to find the best extrusion multiplier and temperature for good weight and best
possible layer bonding. Look at parts weight list for proper multiplier settings.
As a starting point you can use our predefined CURA or MC slicer setting file included in
the package (always adapt it for your printer, change build volume, filament diameter, etc...
according to your printer!!!) for some thick part you‘ll need to use support structure:
CURA_wing_fuse.ini
CURA_ailer_elev.ini
CURA_thick.ini
OR
MC_wing_fuse.slice
MC_ailer_elev.slice
MC_thick.slice
(wing and fuselage parts)
(only ailerons, elevator and rudder parts)
(motor mount, landing gear... )
(wing and fuselage parts)
(only ailerons, elevator and rudder parts)
(motor mount, landing gear... )
AND... please look at VideoGuides:
video CURA slicer setting
CURA 2.3.1 import setting an newest
video CMatterControl slicer setting
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4.1 Print it
Save generated Gcodes to SD card and insert to your printer, prepare your printer and start
printing. We prefer to use SD rather than USB connection.
Note: ABS filament is not suitable for this. Scaling the model will lead to unusable result!
Note: Ninja flex or similar fillaments could be a bit difficult to stick to PEI based surfaces.
You will need: PLA filament - good quality with constant diameter
Strong hair spray (or your favorite adhesive bed surface)
Razor blade
(not needed with PEI or simmilar bed surface, Mk2...)
AND... please look at VideoGuides:
video printing guide #3
Piper Pawnee - parts diagram:
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Basic Tips and Advice
Please experiment with your extrusion multiplier to achieve the same weights as in the list.
HotEnd temperature is very important for a strong result. The reason is the plastic leaving the
nozzle has to melt the previous layer to create solid joint. Please try increasing the temperature
to find the best value (215° up to 260° Celsius). Turn OFF cooling fan (Heatbreak fan of course
has to be left ON). Thin walls easily cools down on its own and the cooling fan worsens the
layer bonding. You can use cooling fan for thick parts if needed...
Heated bed is very recommended, use 50-60° Celsius to print without warping ends.
Any standard quality PLA is suitable to print our planes, but the result depends on combination
of PLA vs. Extruder vs. HotEnd.
Some colors and brands of filament has lower layer adhesion, please do experiment with it.
There are a lot of 3dprinters on the market, most of them are OK for printing our aircraft
(specific thin wall printing...) with sufficient volume, heated bed, 0.4 mm nozzle.
Please look at FAQ and our Forum for next information:
or RCGroups 3Dprinted planes Forum
Tip for printing flexible filament (used for
printing tyres): it is a good IDEA to use
some adhesive tape or foil... first layer
adhesion could be too strong or too weak,
depending on what filament you use...
(picture:RubberJet - TPE32 245/30°C)
Heat the bed to 80°C after finish, remove
tape with printed tyre and clear the bed
with isopropylalcohol...
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5. Assembling printed parts
5.1 Wing assembly
Use CA glue and CA kicker to glue the parts together. Glue the leading edge L1-L5 / R1R5 (with aid of position locks). Continue by glueing the rest of the wing L7-L11 / R7-R11.
Snap press the leading edge assembly to the rest of the wing without adding a glue, align
it carefuly and then pour the thin CA glue into the gap. Don‘t use the kicker here. Glue both
halves of the wing together. Continue with glueing the ailerons and flaps, and fit these on
standard CA hinges trimmed to the right dimensions. Finish the wing assembly by glueing the
wingtips L6 / R6
Proceed the way shown in videoguide:
See video guide #5.1
you will need: CA Hinge Sheet or similar
CA Glue - medium or similar medium viscosity CA glue
Activator for CA Glue or similar, but gas presurized aerosol is better
Snap knife
aileron R
15g/0.53oz
wing R6
9g/0.31oz
flap R
25g/0.88oz
wing R11
19g/0.67oz
wing R10
12g/0.42oz
wing R5
10g/0.35oz
wing R9
22g/0.77oz
wing R4
11g/0.38oz
wing R8
26g/0.91oz
wing R7
50g/1.75oz
wing R3
11g/0.38oz
wing R2
13g/0.45oz
wing R1
25g/0.88oz
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5.2 Fuselage assembly
Use CA glue with CA kicker to glue the parts together. Glue fuselage parts F8-F14, F1-F2,
F3-F7 (with aid of the position locks). You can use snap knife to clear any unwanted
artefacts of printed parts, but mostly it is not necessary. Insert pen spring to canopy part,
insert canopy lock, glue both canopy parts together and test a canopy lock functionality.
Glue front upper part (F1-F2) to bottom assembly (F8-F14). Emplace the canopy and glue
the back upper part (F8-F14) to the bottom assembly. Check the correct position. Use any
hot tool to create an opening to the bottom side.
Proceed the way shown in videoguide:
See video guide #5.3
You will need:
CA Glue - medium or similar medium viscosity CA glue
Activator for CA Glue or similar, but gas presurized aerosol is better
1x ballpoint pen spring (a spring from old ballpoint pen will work fine)
2x M4 blind nuts MP-Jet 1007 AL or Hobbyking M4 nuts or similar
Snap knife
Soldering Iron or any hot tool
F7
23g/0.81oz
F6
F5
16g/0.56oz 23g/0.81oz
F4
35g/1.23oz
F3
50g/1.75oz
canopy lock
6g/0.21oz
canopy
39g/1.37oz
F14
17g/0.59oz
F13
25g/0.88oz
F12
34g/1.19oz
F11
39g/1.36oz
F10
39g/1.36oz
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F9
45g/1.57oz
F2
11g/0.38oz
exhaust
(both)
9g/0.31oz
F1
12g/0.42oz
F8
46g/1.61oz
fr. mount
15g/0.53oz
spinner
21g/0.73oz
... print your plane | www.3DLabPrint.com
5.3 Fuselage tail - rudder, elevator pushrods and servos
Now it‘s a good time to install tail stabilizers, elevator, rudder and pushrods. Use snap knife
to clear the printed parts if needed. Glue the rudder parts, horizontal stabilizer and elevator.
Glue it to the fuselage yet. Use CA Hinge Sheet for elevator and rudder.
Use 1 mm / 20AWG pushrod wire for elevator and rudder pushrods. Make Z bend or use
your preffered pushrods technique. We like these Pushrod Keepers.
Proceed the way shown in videoguide:
See video guide #5.3
You will need: CA Hinge Sheet or similar
CA Glue - medium viscosity CA glue
Activator for CA Glue or similar, but gas presurized aerosol is better
1.0 mm /20AWG steel pushrod wire
Wire cutter, Z bend pliers or pliers.
Snap knife
rudder
26g/0.92oz
elevator R
15g/0.53oz
H stabilizer R
22g/0.77oz
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6.1 Landing gear
Glue the main legs together with CA glue. Use smal pieces of carbon rod 2mm or Toothpicks
for reinforcement and as a position lock. Stretch printed tyres over the discs. Use suitable set
of M3 self tapping nuts and washers to fit the main wheel on a M3 screw.
Proceed the way shown in videoguide:
See video guide #6.1
You will need:
CA Glue - medium viscosity CA glue
small pieces of 2mm carbon rod or simillar (or wooden Toothpick)
2x M3x35mm screws
4x M3 nuts
8x M3 washers
7x 3/15mm self tapping screw
snap knife or sandpaper
tail leg
3g/0.10oz
tail wheel disc
1g/0.04oz
tail tyre
2g/0.07oz
main leg L
33g/1.16oz
wheel disc
22g/0.77oz
main tyre
33g/1.16oz
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7.1 Servo installation
Our Piper Pawnee has been designed for 6pcs of mini servos 30x30x12mm. Mount two servos
to the fuselage. Make Z bend at correct legth of pushrods or use your preferred technique of
pushrods connection. For wings and flaps use servos with extension cables. Glue covers for
aileron and flap servos.
Proceed the way shown in videoguide:
See video guide #7.1
You will need:
6x Hitec HS-82 or similar, size: 30 x 30 x 12mm servos
servo extension cables 300mm / 12 inch
1.0 mm /20AWG pushrod wires for elevator and rudder
1.2 mm /18AWG pushrod wires for flaps and ailerons
Wire cutter, Z bend pliers or pliers.
aileron
flap
+20mm
-15mm
-14mm
-45mm
elevator
CoG at this joint edge
+15mm
-15mm
rudder
R 40mm
L 40mm
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8.1 Motor Setup installing
Attach the motor to the motor mount. Glue the whole assembly into the fuselage. Take care
of the motor leads position.
Proceed the way shown in videoguide:
See video guide #8.1
You will need:
CA Glue - medium viscosity CA glue
4x M3x10mm screws
4x M3 washers
Some tested setups:
SETUP A)
Motor:
Turnigy Aerodrive SK3 - 4240-620KV Brushless Outrunner Motor
ESC: YEP ESC 40A (2~6S) SBEC Brushless Speed Controller or similar at leats 40A/6s
all YEP ESCs are in heli mode by default, use YEP ESC Programming Card to
change it to the plane mode.
Battery:
ZIPPY Compact 2700mAh 6S 35C or similar 6s weight approx 380-400g
Propeller: APC Electro 11x5,5 or any similar
SETUP B)
Motor:
Turnigy Aerodrive SK3 - 3542-1250kv Brushless Outrunner Motor
ESC: HobbyKing 70A BlueSeries or similar at leats 70A/3s
Battery:
ZIPPY Compact 4500mAh 3s 40c Lipo Pack or similar 3s weight approx 380g
Propeller: APC Electro 11x5,5 or any similar
NOTE:
1. YOU CAN USE ANNEALING for front mount
part to increase it‘s thermal resistance. Cover
it on a heatbed after the print is finished with a
cup or something similar and heat the bed to
110°C for at least 30 minutes, or simply boil it
in the water. see this video
2. Don‘t use overloaded setups with low
efficiency that can overheat and melt printed
parts.
3. If you find your setup is still to hot, USE
STRONG PLYWOOD instead printed or
aluminium motor mount part.
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9.1 Decals/Painting
Cut the decals from thin advertisement foil or use any local advertisement or graphic company.
Apply it to your model at will.
You can use any waterproof colors suitable for plastic to paint the model.
See video guide #9.1
9.2 Final completion and setting
Install your receiver, connect battery, setup servos and etc. with your trasmitter, check servo
position. Set the recommended deflections. Check CoG point (joint of wing parts). Install the
propeller as a last step to prevent injury.
Make sure that the battery is placed properly and secured. If battery moves during flight it can
shift the center of gravity backwards and aircraft becomes uncontrollable!
See video guide #9.2
You will need: your own Rx/Tx system, 7channel
2x M4 nylon screws or any M4 x 40mm
adhesive velcro strip for Li-Pol battery
battery strap
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10. Pilots Please Attention!
For the first flights we recommend increasing the expo settings on your transmitter for
elevator and aileron to 60% (this calms the response from your stick inputs) and possibly
decreasing elevator and ailerons throws could help a bit.
Make sure the battery is well fixed in a proper position. In case it moves during a flight, it will
cause the CoG shifts to the tail and can lead to uncontrollable flight behavior.
Check motor mount and screws before each flight...
Do NOT expose this PLA plane in direct sunlight or in a car. (max. PLA temp is about 60°C)
Spent at leats 10 hours with RC flight simulator before you go out for the first time.
Recommended:
Flite test: RC Planes for beginners
Basic to advanced ground handling take-off’s and landing for warbirds
Nose heavy plane flies badly, tail heavy flies once. Never fly tail heavy plane, always check
your Center of Gravity.
Please, use these files only on your own. Don‘t re-distribute
and publish! Thank you very much for supporting us...
... and enjoy your flight!
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Shopping list
Printing material:
1,3kg of PLA filament
RC: 7 channel receiver for your RC system
Motor: Turnigy Aerodrive SK3 - 4240-620KV Brushless Outrunner Motor
ESC: YEP ESC 40A (2~6S) SBEC Brushless Speed Controller
or similar at leats 40A/6s
(YEP ESC Programming Card) for change to plane mode
Battery: ZIPPY Compact 2700mAh 6S 35C or similar 6s weight approx 380-400g
Propeller:
APC Electro 11x5,5 or any similar
Servos: 6x Hitec HS-82 or similar, size: 30 x 30 x 12mm servos
2x servo extension cables 300mm / 12 inch
Glue:
CA Glue - medium or similar medium viscosity CA glue
Activator for CA Glue or similar
Other:CA Hinge Sheet or similar
1x ballpoint pen spring (a spring from old ballpoint pen will work fine)
2x M4 blind nuts MP-Jet 1007 AL or Hobbyking M4 nuts or similar
1.0 mm /20AWG pushrod wires for elevator and rudder
1.2 mm /18AWG pushrod wires for flaps and ailerons
2 mm carbon rod (small piece for tail wheel axis and main leg
reinforcement) or wooden Toothpick)
2x M3x35mm screws
4x M3 nuts
12x M3 washers
7x 3/15mm self tapping screw or any fitting screws
velcro tape
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