41.0mm Stacker
Built for large 1 oz silver coins, including American Silver Eagles
Overview

Design

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
- Tube:

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