Strongman Atlas Stone Mold – 80 KG Concrete Beast

🏋️♂️ Strongman Atlas Stone Mold – 3D Print Your Own 80KG Concrete Beast 💪

This is a 3D printable concrete mold designed for Strongman Stones at home, in the garage, or for gym use.
The mold consists of multiple segments that are bolted together, creating a strong and reusable form.

It is optimized for PLA printing and easy post-processing.

🔧 Features

• Multi-part mold with screw holes
• Reusable design
• Suitable for concrete, fine concrete, or high-strength concrete
• Fill opening on top
• Surface quality depends on post-processing

🖨️ 3D Printing Recommendations

• Material: PLA, PETG, ABS
• Layer height: 0.2 mm
• Wall thickness: 4 perimeters
• Infill: 10% (Gyroid or Cubic recommended)
• Supports: 4x yes, 4x no

🪚 Mold Post-Processing (Highly Recommended)

For a smoother concrete surface, Longer mold lifespan and Easier demolding:

1. Light sanding of the inner surface
   • Grit 120–180
   • Remove visible layer lines only
2. Optional: Apply filler
   • Filler primer or thin epoxy coating
   • Final sanding with 240–320 grit
3. Always apply release agent before casting
   • Silicone spray
   • Mold wax
   • Light layer of petroleum jelly (buffed)

🧱 Concrete Casting Notes

• Assemble and tighten all screws evenly 32x M8
• Use dense concrete, not too liquid
• Fill slowly and tap or vibrate the mold to remove air bubbles
• Smooth the top opening
• Let cure 24–48 hours minimum
• Demold carefully after initial curing

🧪 Test Status

✅ The mold has already been tested successfully:

• Diameter: ~41 cm (approx. 16 inch )
• Weight: ~79 kg concrete stone

During testing, the mold worked, but:

• The first version cracked in some areas
• The 3D model has been reinforced and improved in critical spots

⚠️ Very important lessons learned:

• Use very dry concrete
• Never move the mold after filling
  → This will very likely cause the mold to break
   

🚧 What’s next?

👉 New sizes / scalings coming soon