Helldivers 2 - SMG-37 Defender Replica

Join the fight for Super Earth and bring managed democracy to your cosplay shelf with this SMG-37 Defender–inspired prop, fully designed from scratch in Fusion 360 and optimized for home 3D printing.

⚠️ This is NOT a real weapon.
 

This is a solid plastic prop intended for cosplay, display, and collection purposes only.

🔧 Features

• ✅ Removable magazine held in place with a 10mm circular neodymium magnet
• ✅ Folding stock that locks open/closed using two 10mm circular neodymium magnets
• ✅ Clean sci-fi detailing inspired by the in-game SMG-37 Defender
• ✅ Comfortable grip geometry and balanced proportions
• ✅ Designed for glue-based assembly
• ✅ Optimized for PLA filament

Perfect for:

• Cosplay builds
• Convention props
• Display pieces
• Game-room decor

🧲 Hardware Required

You’ll need:

• (6x) 10mm round neodymium magnets
  • 2x for the magazine
  • 4x for the folding stock lock

Standard super glue or CA glue works great for assembly.

🖨 Recommended Print Settings

The print profile provided should work for most. These are general guidelines — feel free to tweak for your setup:

• Material: PLA
• Layer height: 0.2mm
• Infill: 5–10% gyroid or cubic
• Perimeters: 2–3 walls
• Supports: Only where needed (mainly under overhangs)
• Brim optional for longer parts

All parts are oriented to minimize supports and maximize strength.

🛠 Assembly

• Dry-fit everything first
• Glue main body sections together
• Press-fit / glue magnets into their pockets (⚠️ watch polarity!)
• Attach folding stock arms and butt pad
• Insert magazine magnet and mag body
• Final cosmetic sanding/painting optional

PLA sands and paints beautifully if you want to go full screen-accurate.