| Cover | Sep. 26, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Sep. 26, 2024 |
| Entity Registrant Name | Velo3D, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39757 |
| Entity Tax Identification Number | 98-1556965 |
| Entity Address, Address Line One | 2710 Lakeview Court, |
| Entity Address, City or Town | Fremont, |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94538 |
| City Area Code | 408 |
| Local Phone Number | 610-3915 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001825079 |
| Amendment Flag | false |
