Table 1. List of parts and costs for construction of the ElectroPen.
| Part | Cost (in US Dollars) |
|---|---|
| Piezoelectric crystal | $0.02 |
| Copper-plated wire | $0.10 |
| Heat-shrinking wire insulator | $0.05 |
| 3D-printed casing | $0.05 |
| Aluminum tape | $0.01 |
| ElectroPen | $0.23 |
The net price is reflective of goods purchased in wholesale/large quantities from suppliers (excluding production costs). Links to the parts: https://www.alibaba.com/product-detail/Gas-Stove-Piezo-Igniter_846229760.html?spm=a2700.galleryofferlist.normalList.94.2a9c42f0IamSzp (piezoelectric crystal), https://www.alibaba.com/product-detail/8mm-Enamelled-bare-Copper-electrical-cable_60799942909.html?spm=a2700.7724838.2017115.53.7b8f95a3DwE73y (copper-plated wire), https://www.alibaba.com/product-detail/Custom-Insulated-Terminal-TC-200PC-Heat_60709731683.html?spm=a2700.galleryofferlist.normalList.73.69161808RjOrwX (heat-shrinking wire insulator), https://www.alibaba.com/product-detail/Competitive-advantages-3d-printing-black-pla_60520203080.html?spm=a2700.galleryofferlist.normalList.83.c5dd65ffTdLDAu (3D-printed casing), and https://www.alibaba.com/product-detail/High-Performance-Aluminum-Foil-Tape-for_1901874077.html?spm=a2700.galleryofferlist.normalList.234.29db24f8cC4A7P (aluminum tape).