| Business | Phone |
| I D Machine Shop 705 Uhland Rd, San Marcos 78666 | (512) 353-8272 |
| Livingston Machine Works 16354 N State Highway 123, San Marcos 78666 | (512) 353-4445 |
| San Marcos Auto Machine 2220 Staples Rd, San Marcos 78666 | (512) 396-1957 |
| Vaughn Industries 2605 S I H 35 400, San Marcos 78666 | (512) 392-8081 |