Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2023	May 15, 2023
Document Information Line Items
Entity Registrant Name	Welsbach Technology Metals Acquisition Corp.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		5,913,698
Amendment Flag	false
Entity Central Index Key	0001866226
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Mar. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-41183
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-0106702
Entity Address, Address Line One	160 S Craig Place
Entity Address, City or Town	Lombard
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60148
City Area Code	(217)
Local Phone Number	615-1216
Entity Interactive Data Current	Yes
Units, each consisting of one share of common stock, $0.0001 par value, and one right to receive one-tenth of one share of common stock
Document Information Line Items
Trading Symbol	WTMAU
Title of 12(b) Security	Units, each consisting of one share of common stock, $0.0001 par value, and one right to receive one-tenth of one share of common stock
Security Exchange Name	NASDAQ
Common stock, $0.0001 par value per share
Document Information Line Items
Trading Symbol	WTMA
Title of 12(b) Security	Common stock, $0.0001 par value per share
Security Exchange Name	NASDAQ
Rights, each exchangeable into one- tenth of one share of common stock
Document Information Line Items
Trading Symbol	WTMAR
Title of 12(b) Security	Rights, each exchangeable into one- tenth of one share of common stock
Security Exchange Name	NASDAQ