41.0mm Stacker

Built for large-diameter 1 oz silver coins like 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

Compatible Coins

Coin Name	Diameter	Thickness	Mint
American Silver Eagle (1 oz)	40.6 mm	~2.98 mm	US Mint
Australian Silver Kangaroo	40.6 mm	~3.21 mm	Perth Mint
Chinese Silver Panda (1 oz)	40.0 mm*	~2.98 mm*	China Mint
Silver Britannia (post-2013)	38.61 mm	3.00 mm	Royal Mint (UK)
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

• Designed for max-diameter silver coins
• Perfect fit for American Silver Eagles
• Accommodates modern Britannias

Magnetic System

Magnet Type: Ceramic/Ferrite 25 mm diameter × 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 will be available soon on Makerworld! Makerworld

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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