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 Get The Files Delivered Automatically to your Email on Release Day and get the Bonus Stack Below

EARLY CUSTOMER PACKAGE OFFER.

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$149

WHAT YOU GET:

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Lifetime Free Upgrades

Current version V2

  1. 74X V2 CORE FILE STACK (on release day)

  • Premium Instructional Package & Guidence

  • STL/3MF UPGRADE- Use any slicer with any 3D Printer (Min print volume 220x220x250)

  • Easy to Source Electronics & Materials

  • Easier Assembly 

  • More Detachable Aircraft Sections For Easy Replacement, Transport & Storage

  • Upgraded Aircraft Details, Dimensions, and Paneling

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Lifetime Free Upgrades

Current version V2

2. ProScale RETRACTS V2 FILE STACK (on release day)

  • ULTRA Premium Instructional Package & Guidence

  • STL/3MF UPGRADE- Use any slicer with any 3D Printer(Min print volume 220x220x250)

  • Easy to Source Electronics & Materials

  • Main Gear Retract Module (For Removal, Replacement, or Work Access)

  • Highly Refined Design with Proven Mechanisms (over 20 iterations during development)

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UPGRADES ADDED TO YOUR PURCHASE:

Less Than 10 packages available

FREE UPGRADE 1

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Not Available in the HM3D Store

$29 value

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Step by Step Guide to DIY Your Own Cockpit Hatch (Two Methods)

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  • Available NOW  (Instant Download in Package)

  • 3D Print Files (Vac Former & Cockpit)

  • List of materials included (BOM)

  • Instructions included

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FREE UPGRADE 2

$29 value

74X Stretched Freighter- Inspired by the Boeing 747-8F 

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  • Available NOW  (Instant Download in Package)

  • 3D Print Files (Pair with 74X Core)

  • 63mm 8-Blade GEM FAN / 2205-1800kv / 6S: 24 oz  Thrust Per Engine 

  • Stretched Fuselage Sections with Freighter Detailed Doors

  • Raked Wing Tips

  • Scalloped High-Bypass Engine Exhaust Detail

  • Short Upper Deck 

  • Retract Compatible 

FREE UPGRADE 3

$49 Value

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Retract Driver Board (Shipped)

  • Required to Sequence 74X Retracts

  • Wiring Diagram & Instructions included

  • FREE SHIPPING TO USA

  • International Shipping $10 to $30 usd depending on country)

Total Bundled Savings- $256

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$149

Global Builds & Success

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HM3D, LLC

3D printed RC airliners & heavy jets 

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© 2026 HM3D, LLC. All rights reserved.
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