41.0mm Stacker

Built for large 1 oz silver coins, including American Silver Eagles

Overview

41 Stacker

Design

41 Stacker

Dimensions

Feature Value
Inner Diameter 41.0 mm
Base Diameter 50.0 mm
Total Height 86.5 mm
Cap Height 14.0 mm
Tube Height 72.5 mm
Base Recess -0.5 mm
NFC Badge Slot Ø25 mm × 1 mm (snap-fit)
  • Primary Use: Large 1 oz silver coins
  • Part Numbers:
    • Tube: T-41
    • Cap: C-41

41 Stacker

Compatible Coins

Coin Name Diameter Thickness Mint
American Silver Eagle (1 oz) 40.6 mm ~2.98 mm United States Mint
Australian Silver Kangaroo 40.6 mm ~3.21 mm Perth Mint
Chinese Silver Panda (1 oz) 40.0 mm* ~2.98 mm* People’s Bank of China
Silver Britannia (post-2013) 38.61 mm 3.00 mm The Royal Mint
South African Krugerrand (Silver) 38.7 mm 2.84 mm South African Mint

Note: Only coins with a diameter greater than 38.5 mm are included in this stacker. These larger coins will not fit in smaller stackers.

Specifications

  • Recommended Coin Diameter: 40–41 mm
  • Typical Coin Thickness: ~3.0 mm

Capacity

  • Standard tube (72.5 mm height): Typically holds ~20 coins depending on capsule thickness
  • Designed for max-diameter silver coins
  • Perfect fit for American Silver Eagles
  • Accommodates modern Britannias

Magnetic System

Magnet Type: Ceramic/Ferrite, 25 mm × 4 mm thick

  • Locations:
    • Lid (South polarity up / hole down)
    • Base (North polarity up / hole up)
  • Configuration: Embedded into each part during printing

NFC Integration

  • Tag Type: NTAG215 (25 mm round)
  • Placement: Inserted into badge slot after printing
  • Scan Area: NFC badge face
  • Compatibility: Most NFC-enabled smartphones

Technical Notes

  • Optimized for largest standard silver coins
  • Maximum stability with 50 mm base
  • Robust vertical stacking capability
  • Designed for American Silver Eagle (ASE) collectors and investors

Model Files

  • 3D models files are available on Cults 3D! Cults 3D

Navigation

Required Components

See the Bill of Materials for full details.

  • Tube STL file (T-41.stl)
  • Cap STL file (C-41.stl)
  • NFC badge (badge-41.0.stl)
  • 2× Ceramic/Ferrite magnets (25 mm × 4 mm)
  • 1× NTAG215 NFC tag