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3D PRINT
      RC MODEL AIRLINERS and     HEAVYJETS
 HERE.
        
 


 

YOU can now build beautiful, realistic airframes that fly as good as they look. Finally.

HM3D 74X SPECS & FEATURES

  • 60" span

  • 71" length

  • 6-8 lbs flight weight

  • 4x brushless outrunners power 4x 50mm 12 BLD EDF (3d printed adaptor required)

  • min. 5 channel Rx/Tx

  • 6s 2p 6400mAh Li-ion  or 5s 1p 5000mAh Lipo

  • 7 to 15 min flight times recorded. Dependent on packs and motors.

  • 4-in-1 35A drone ESC in opto

  • 4 to 6A BEC

  • Servo options- SG-90/ TGY-1440A / ES9051 / KST-06

  •  4-in-1 esc

  • Scale NACA ducts provide cooling to electronics 

  • Spring lock center hatch (13" length)

  • Detachable Tail section, Tail cone, and Nose section for access and transport

  • detachable wings with boltless 3d printed double click-locks for ultra convenient transport and assembly.

  • 18x 3d printed foam wheels with smooth bearings 

  • retracts- no (in development for i2B)

  • landing gear suspension (nose- strut spring, mains elastic tensioners on rotating trucks.)

  • stationary scale flaps for aerodynamics and realism. (functioning electronic flaps in development for i2B)

  • high speed Ailerons​​

  • Optional direct servo or pushrod tail variants

  • Proprietary LED System with multiple on/off switches from TX and designed to install neatly into aircraft​​

  • Majority of airframe printed in vase mode with multi-processes for hardpoints and bulkheads using simplify3D slicer software.

  • Vinyl cut graphics for windscreen, passenger windows and doors.​

minimum printer build 

      220x220x250

CUSTOMER BUILDS 2025

Alexander from Germany

Tom from the U.S.A.

Tim from Taiwan

Neil from the U.S.A.

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"This airplane is extremely detailed and flies unbelievably well! Better than expected."   -

Tom Mansell

HM3D Design Feedback & Boeing 747-400/-8  Captain

DISCOVER CONFIDENCE in YOUR FIRST FLIGHT.

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74X

  • In testing, the "i2" exhibited zero stall tendencies—even with full up elevator deflection held.  This makes landings incredibly predictable and satisfying. If you can land a Cub, you can land this. Just allow for a slightly longer approach and a bit more runway.

  • The scale outline of this airliner is undeniable and easy to see, even at a distance. The huge vertical fin and swept wing profile make it easy.

  • Though a jumbo jet, there was a relentless effort to engineer the airframe as light-weight as possible. All while retaining structure for  handling and transport. The biggest benefit, of course, is the smooth and docile performance due to low wing loading.

DOWNLOAD & START PRINTING NOW
For Buttery Smooth Prints. No Complicated Slicing. Just Print, Build, & Fly. 

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All 3D Printed Parts i2A 2
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G-CODE SAMPLE

Here, test out a sample gcode print.

Load this file onto your printer, hit print, and see how you like it. 

Colorfabb LW-PLA

If you have a cartesian machine that is a "downstream" design inspired by the Ender3 and runs on marlin firmware, the Ender3 Gcode will very likely run fine on that setup.  The Ender 5 is actually included in that group, though it's design appears to be a core x y.  So we hear. Let us know otherwise please.

If you're printer is not listed here, please contact us and we'll get that posted for you.

Ender3, CR-10, Artillery, Prusa, Etc.

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Bambu Lab P1S

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Flsun V400

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Creality K1

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  • AIRCRAFT PART DOCUMENTS 

  • COMMUNITY BUILD FORUM

  • B.O.M. & PRODUCT LINKS 

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 FOLLOW ALONG BUILD VIDEOS  ​​​​​​​​​

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CORTNEY'S JOURNEY

Follow along as she takes you from 3D Print, all the way to FIRSTFLIGHT.

1) LANDING GEAR ASSEMBLY POSTED

2) FUSELAGE ASSEMBLY PART 1 POSTED

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MONTHLY GIVEAWAYS 

For signed up builders. Just create an account. Free.

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JOIN US FOR PAINTING AND FINISHING DOCUMENTATION IN 2025!

Summer 25' follow along video series demonstration with materials list, steps, and techniques. See you then!

HM3D BUILDERS AREA

Building a community to push the Future Development of un-imagined RC Airliners and HeavyJets

ENJOY REFINED FEATURES

An exciting ambition we have at HM3D, is the promise to continually REFINE, FIX, UPGRADE, and ADD to the over-all designs, and Gift the community with revised file postings and options. 
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Tool-less wing locking tabs and clever cable management (including Dynamic Lighting System designed in-house)
Gigantic Access Hatch with spring Latch
3D Printed LW ASA Plug System
Tail Cone Magnetic Hatch Access to Tail Linkage
Duct Cooling
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© 2025 HM3D. All rights reserved.
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