Velo3D, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Description of Business and Basis of Presentation - Going Concern, and Liquidity and Capital Resources (Details)

Description of Business and Basis of Presentation - Going Concern, and Liquidity and Capital Resources (Details) - USD ($)										12 Months Ended
	Mar. 18, 2026	Dec. 23, 2025	Dec. 22, 2025	Aug. 20, 2025	Aug. 19, 2025	Aug. 14, 2025	Dec. 24, 2024	Jul. 01, 2024	Apr. 10, 2024	Dec. 31, 2025	Dec. 31, 2024	Mar. 04, 2026	Dec. 08, 2025	Sep. 30, 2025	Jun. 30, 2025	Jun. 27, 2025	Apr. 07, 2025	Mar. 31, 2025	Feb. 10, 2025	Jan. 07, 2025	Sep. 30, 2024	Sep. 16, 2024	Jun. 30, 2024	Jun. 10, 2024	Apr. 15, 2024	Apr. 01, 2024	Mar. 31, 2024
Subsequent Event [Line Items]
Accumulated deficit										$ 498,143,000	$ 426,781,000			$ 476,245,000	$ 465,057,000			$ 451,795,000			$ 405,505,000		$ 383,625,000				$ 384,560,000
Exercise Price per Warrant (in dollars per share)									$ 183.75
Cash and short-term investments										$ 39,000,000
Common stock, shares issued										24,607,630	12,993,962
Common stock, par value										$ 0.00001	$ 0.00001					$ 0.00001								$ 0.00001
Stock exercised										0	3,000
2025 Equipment Loan
Subsequent Event [Line Items]
Principal payments													$ 10,000,000
Underwriting Agreement [Member]
Subsequent Event [Line Items]
Net proceeds from the offering					$ 17,800,000
Common stock, par value					$ 0.00001
August 2025 Offering [Member]
Subsequent Event [Line Items]
Net proceeds from the offering				$ 17,800,000
Underwriting discounts and commissions, and other estimated offering expenses payable				2,300,000
Gross proceeds from issuance of common stock				20,100,000
Commons stock value				$ 17,500,000
Private Placement
Subsequent Event [Line Items]
Gross proceeds from issuance of common stock		$ 30,000,000
Common Stock
Subsequent Event [Line Items]
Stock exercised											3,390
Common Stock \| Underwriting Agreement [Member]
Subsequent Event [Line Items]
Common stock issued					5,833,333
Common stock, par value					$ 0.00001
Offering price per share					3
Sale of stock, price per share					$ 3
Common Stock \| August 2025 Offering [Member]
Subsequent Event [Line Items]
Common stock issued				5,833,333
Stock exercised				875,000
Common Stock \| Private Placement
Subsequent Event [Line Items]
Common stock issued			3,636,363
Common stock, par value			$ 0.00001
Sale of stock, price per share			$ 8.25
Second Secured Notes
Subsequent Event [Line Items]
Exercise Price per Warrant (in dollars per share)																										$ 239.22
Secured notes, cash payments to note holders																									$ 5,500,000	$ 5,000,000
Secured notes, aggregate principal amount, repaid																									$ 4,600,000	$ 4,200,000
Class of Warrant or Right, Unissued																										41,808
Third Secured Notes
Subsequent Event [Line Items]
Exercise Price per Warrant (in dollars per share)								$ 45.00
Securities purchase agreement, partial redemption payment								$ 10,500,000
Redemption payment, start date								Aug. 01, 2024
Redemption extended payment period, start date								Oct. 04, 2024
Secured notes, cash payments to note holders																						$ 600,000
Secured notes, aggregate principal amount, repaid																						$ 500,000
Class of Warrant or Right, Unissued								110,000
Securities Purchase Agreement
Subsequent Event [Line Items]
Exercise Price per Warrant (in dollars per share)									$ 183.75
Net proceeds from the offering									$ 12,000,000
Class of Warrant or Right, Unissued									65,307
Senior Secured Convertible Promissory Note
Subsequent Event [Line Items]
Debt instrument, face amount																			$ 10,000,000	$ 5,000,000
Secured notes bear interest rate																			30.00%	60.00%
Note payable amount																	$ 5,750,000		$ 5,750,000
Conversion price																			$ 15
Senior Secured Convertible Promissory Note \| Tranche One
Subsequent Event [Line Items]
Debt instrument, face amount																			$ 5,000,000
Senior Secured Convertible Promissory Note \| Tranche Two
Subsequent Event [Line Items]
Debt instrument, face amount																			$ 5,000,000
Debt For Equity Exchange
Subsequent Event [Line Items]
Secured notes, cash payments to note holders							$ 26,900,000
Secured notes, aggregate principal amount, repaid							$ 22,400,000
Common stock, shares issued							12,343,423
Cancellation of principal amount							$ 22,400,000
Debt instrument, accrued interest							400,000
Debt instrument, face amount							$ 5,000,000
Debt For Equity Exchange \| Arrayed Notes Acquisition Corp
Subsequent Event [Line Items]
Ownership, Percentage							95.00%
January Note
Subsequent Event [Line Items]
Conversion price						$ 16.38
Maturity date						Feb. 14, 2027
Reductions of interest rate percentage						12.00%
February Note
Subsequent Event [Line Items]
Conversion price						$ 10.5
Maturity date						Feb. 14, 2027
Reductions of interest rate percentage						12.00%
Maximum \| Common Stock \| Underwriting Agreement [Member]
Subsequent Event [Line Items]
Additional shares					875,000
Subsequent Event \| Senior Secured Convertible Promissory Note \| Arrayed Notes Acquisition Corp
Subsequent Event [Line Items]
Common stock, shares issued												394,517
Debt instrument, face amount												$ 5,000,000
Conversion price												$ 16.38
Subsequent Event \| Senior Secured Convertible Promissory Note \| Thieneman Construction, Inc.
Subsequent Event [Line Items]
Common stock, shares issued												1,145,830
Debt instrument, face amount												$ 10,000,000
Conversion price												$ 10.5
Subsequent Event \| Secured Note due 2026
Subsequent Event [Line Items]
Repaid of principal and accrued interest	$ 3,200,000