22.2mm Stacker
Designed for popular 1/4 oz gold coins from major global mints
Overview
Design
Dimensions
| Feature | Value |
|---|---|
| Inner Diameter | 22.2 mm |
| Base Diameter | 30.0 mm |
| Total Height | 88.5 mm |
| Cap Height | 14.0 mm |
| Tube Height | 74.5 mm |
| Base Recess | -2.0 mm |
| NFC Badge Slot | Ø25 mm × 1 mm (snap-fit) |
- Primary Use: 1/4 oz gold coins
- Part Numbers:
- Tube:
T-22 - Cap:
C-22
- Tube:
Compatible Coins
| Coin Name | Diameter | Thickness | Mint |
|---|---|---|---|
| 1/4 oz Gold Maple Leaf | 20.00 mm | 1.78 mm | Royal Canadian Mint |
| 1/4 oz Gold Britannia | 22.00 mm | 1.63 mm | Royal Mint (UK) |
| 1/4 oz Gold Kangaroo | 20.10 mm | 1.80 mm | Perth Mint |
| 1/4 oz Gold Panda | 21.95 mm | 1.53 mm | China Mint |
| 1/10 oz Gold Panda | 17.95 mm | 1.05 mm | China Mint |
| 1/4 oz Platinum Maple Leaf | 20.00 mm | 1.40 mm | Royal Canadian Mint |
| 1/4 oz Platinum American Eagle | 20.00 mm | 1.32 mm | US Mint |
| 1/4 oz Platinum Britannia | 22.00 mm | 1.40 mm | Royal Mint (UK) |
| 1/4 oz Platinum Philharmonic | 20.00 mm | 1.20 mm | Austrian Mint |
Specifications
- Recommended Coin Diameter: 20–22 mm
- Typical Coin Thickness: ~1.6–1.8 mm
Capacity
- Designed for 1/4 oz gold coins
- Precise fit for major mint products
- Accommodates slight variations in diameter
Magnetic System
- Magnet Type: Ceramic/Ferrite 1” (25mm) diameter × 4mm 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 quarter-ounce gold coins
- Magnets are embedded into each part during printing
- Compact design maintains security while maximizing storage efficiency
- Wall thickness provides optimal protection for valuable contents
Model Files
- 3D models will be available soon on Makerworld! Makerworld
Navigation
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Required Components
See the Bill of Materials for full details.
- Tube STL file (
T-22.stl) - Cap STL file (
C-22.stl) - NFC badge (
coinfinity-badge.stl) - 2× Ceramic/Ferrite magnets (25 mm × 4 mm)
- 1× NTAG215 NFC tag