Velo3D, Inc. Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Changes in Fair Value of Level 3 Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Warrant liabilities \| Private Placement Warrants [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 241	$ 1,757	$ 127	$ 888
Change in fair value	114	869
Warrant liabilities \| 2022 Private Placement Warrants [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	28	146	23	109
Change in fair value	5	37
Warrant liabilities \| 2023 Private Warrant A
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	13,053	0	10,891	0
Change in fair value	2,162	0
Warrant liabilities \| 2023 Private Warrant B
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	644	0	536	0
Change in fair value	108	0
Contingent Earnout Liability [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	1,893	27,067	$ 1,456	$ 17,414
Change in fair value	$ 437	$ 9,653