Commemorative Coin

From Hack Manhattan Wiki

Commemorative Coins

@mugenity created a one year anniversary coin for the nycmakesppe.com effort. The coins were designed to contain a microSD card with a thank you note. This is token that may be useful for a new fundraising campaign.

Designs can be found in https://github.com/hackmanhattan/3DModeling/tree/main/nycmakesppe.

Material Breakdown
Material Cost Per Purchase Unit Cost per Coin Notes
Resin $25 per 500mL per can $0.40 very fragile to dropping, might need clear epoxy reinforcement
Aluminum $? $? difficult to smelt safely
Pewter $105 per 4lb ? sculpt.com

Additional Costs

  • Delivery to supporters (Possible per envelope)
  • MicroSD modification requires purchasing a microSD click slot for around $0.20 per unit
  • MicroSD containing a thank you note or media would cost $4.50 for a 16GB (smallest available at Microcenter)

Cost research

  • Etsy shows listings for metal coins ~$20 and hundreds of sales https://www.etsy.com/search?q=coin
  • Resin coins could go for similar prices if reinforced so dropping doesn't cause breakage
  • 100 coins sold at $10 would be ~$900 profit.

Build Video

Footage

  • Painting
    • Caption: 2 coats of metallic spray paint
  • Clear Coat
    • Mixing clear resin
    • Applying on coins
    • Flame to pop bubbles
  • Assembly
    • Carving out microSD slot
    • Inserting microSD slot and microSD

Captions

  • Painting: Spray with 2 coats of metallic spray paint
  • Clear Coat
    • Mix the resin for 10 minutes
    • Apply evenly across surface
    • Treat with light fire to pop bubbles
  • Assembly:
    • Extract excess material in microSD slot
    • Press fit microSD slot and test insertion


Additional

What does it finance?

  • 1 coin: $20, Arduino board
  • 2 coins $40, Raspberry Pi
  • 3 coins: $60, Starving hacker monthly due
  • 4 coins: $80, ______
  • 5 coins: $100, monthly internet bill

References