# 3D-printed replacement part for coffee grinders

Designed a printed upgrade for a worn part in a popular coffee grinder and sells it through a print-on-demand marketplace. Traffic comes from a repair guide on a fix-it site.

| Tag | Value | Confidence |
|---|---|---|
| Category | Physical products | 90% |
| Earns from | One-time sales | 91% |
| Startup cost (estimate) | Under $100 | 42% (low) |
| Time (estimate) | Hands-off | 76% |
| Where | Online | 95% |
| Coding | No coding needed | 93% |

Source: [Ask HN: What was your best passive income in 2016?](https://news.ycombinator.com/item?id=13151774), Hacker News, gottebp, 2016-12-11
Page: https://allsidehustleideas.com/ideas/3d-printed-replacement-part-for-coffee-grinders-0b4dbf

## About this data

- Sources are public, first-person accounts: interviews, podcasts and community threads.
- Cost, time and the other tags are machine estimates, each with a confidence score.
- Income figures are the owner's own claim. We don't verify them.
- Link the idea page and its source. Call income figures the owner's unverified claim, and cost and time estimates.