Quarterly report pursuant to Section 13 or 15(d)

Equity Instruments - Additional Information (Details)

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Equity Instruments - Additional Information (Details) - USD ($)
 1 Months Ended 6 Months Ended
Apr. 12, 2024
Apr. 10, 2024
Sep. 29, 2021
Feb. 28, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 10, 2024
Dec. 31, 2023
Dec. 02, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         3,111,261     1,455,574  
Exercise Price per Warrant (in dollars per share)   $ 12.25              
Change in fair value         $ (22,690,000) $ 1,725,000      
At-the-market offering, company may offer to sell, january 31, 2024 amendment         $ 75,000,000        
Common stock, shares authorized         500,000,000     500,000,000  
Common stock, shares issued         8,611,219     7,502,478  
Common stock, par value (in dollars per share)         $ 0.00001   $ 0.00001 $ 0.00001  
Preferred stock, shares issued         10,000,000        
Preferred stock, par value         $ 0.00001        
Common stock, shares outstanding         8,611,219     7,502,478  
Number of shares of common stock reserved for issuance (in shares)         4,266,098     2,591,418  
ATM Sales Agreement                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Value of shares sold, may offer and sell up to       $ 40,000,000          
Common stock, shares issued         0        
Number of shares of common stock reserved for issuance (in shares)         571,429        
2021 Equity Incentive Plan                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of shares of common stock reserved for issuance (in shares)         369,170        
2021 Employee Stock Purchase Plan                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of shares of common stock reserved for issuance (in shares)         73,748        
Securities Purchase Agreement                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Exercise Price per Warrant (in dollars per share)   $ 12.25              
Class of Warrant or Right, Unissued   979,592              
Proceeds from Issuance of Common Stock   $ 12,000,000              
April 2024 Securities Purchase Agreement                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Exercise Price per Warrant (in dollars per share)   $ 12.25              
Number of shares of common stock reserved for issuance (in shares)   979,592              
Class of Warrant or Right, Unissued   979,592              
Proceeds from Issuance of Common Stock $ 12,000,000                
Placement Agency Agreement                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Placement Agency Agreement, Cash Fee of Aggregate Purchase Price   7.00%              
Placement agency agreement, certain expenses, reimbursed amount   $ 150,000              
Placement Agency Agreement, Percent, Purchase Number of Shares of Common Stock Sold in Offering   5.00%              
Placement Agency Agreement, Shares, Purchase Number of Shares of Common Stock Sold in Offering   48,980              
Placement Agent Warrants, Exercise Price   $ 13.475              
Placement Agent Warrants, Percent, Offering Price Per Share   110.00%              
Eligible Velo3D Equityholders                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Earnout period         5 years        
Eligible Velo3D Equityholders | JAWS Spitfire                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of shares that the holders may receive (in shares)     292,744            
Eligible Velo3D Equityholders | Maximum | JAWS Spitfire                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of shares that the holders may receive (in shares)     585,488            
Common stock warrants                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         3,111,261     1,455,574  
Private Placement Warrants [Member]                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Exercise Price per Warrant (in dollars per share)                 $ 402.50
Public Warrants [Member]                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         246,429     246,428  
Exercise Price per Warrant (in dollars per share)         $ 402.50     $ 402.50  
2022 Private Placement Warrants [Member]                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         2,000     2,000  
Exercise Price per Warrant (in dollars per share)         $ 89.6     $ 89.6 $ 89.6
2022 Private Placement Warrants [Member] | Maximum                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Warrants term         10 years 25 days     10 years 6 months 25 days  
2023 Private Warrant A [Member]                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         1,028,571     1,028,574  
Exercise Price per Warrant (in dollars per share)         $ 19.78     $ 19.78  
2023 Private Warrant B [Member]                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         51,429     51,429  
Exercise Price per Warrant (in dollars per share)         $ 21.75     $ 21.75  
2024 Private Warrants [Member]                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         627,117        
Exercise Price per Warrant (in dollars per share)         $ 15.946        
Class of Warrant or Right, Unissued         627,117        
BEPO Warrants                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         979,592        
Exercise Price per Warrant (in dollars per share)         $ 12.25        
Class of Warrant or Right, Unissued         979,592        
BEPO Agent Warrants                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Number of Warrants (in shares)         48,980        
Exercise Price per Warrant (in dollars per share)         $ 13.475        
Class of Warrant or Right, Unissued         48,980        
Common Stock Warrants                  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]                  
Warrants term         2 years 3 months     2 years 9 months