Garage machine shop for prototypes and repairs
Start with a benchtop mill and lathe at home, making prototypes and one-off parts for inventors and local shops.
- $5k-25k
- Side hustle
- From home
Estimates for a small start in the US, not guarantees.
Official data
17,156 US businesses with employees in this field, -1.6% in a year
NAICS 332710 “Machine shops”. Source: U.S. Census Bureau, County Business Patterns 2023.
What it is
A small home or garage workshop with benchtop manual or CNC machines, making single prototypes, replacement parts and small batches in metal and plastic.
Your first three steps
- Check your zoning, HOA or lease rules, and whether you need a home occupation permit
- Buy a sound used benchtop mill or lathe and basic tooling, then make sample parts to show
- Tell local makerspaces, repair shops and product designers what you offer, and list on an online manufacturing marketplace
Who pays
Inventors, hardware start-ups, hobbyists, repair businesses and local workshops that need a quick one-off part.
How it makes money
Hourly shop rate or a fixed price per part, plus materials. Many people run this alongside a job until orders build up.
Skills that help
- Manual or CNC machining
- Reading drawings and basic CAD
- Precise measuring
- Clear communication with customers
Watch out for
- Home occupation permits, HOA and lease rules, and noise limits, check with your city or county
- Home insurance often excludes business use, so ask about a business policy with general liability
- Power supply, floor strength and safe handling of cutting fluids and metal chips
- Machine safety, since lathes and mills can cause serious injury
- Limited machine size and capacity will cap the jobs you can take
🔒 Full research report for US
Real cost breakdown with current prices, licences and registration checklist, local competition, pricing, break-even and a 30-day launch plan, with sources.
Coming soonQuestions people ask
How much does it cost to start a garage machine shop?
Startup costs are typically around $5,000 to $25,000, depending on whether you buy manual or CNC benchtop machines, plus tooling, measuring tools and insurance. These are estimates, so shop around before buying.
How much can a home machine shop earn?
Monthly revenue is typically around $500 to $3,500, depending on how many jobs you take and your hours. These are estimates, and limited machine size and capacity will cap the work you can accept.
What should I check before running a machine shop from home?
Check home occupation permits, HOA and lease rules, and noise limits with your city or county. Also ask whether home insurance excludes business use, and confirm power supply, floor strength, cutting fluid handling and machine safety.
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