| Cover | Mar. 18, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 18, 2024 |
| Entity File Number | 001-41183 |
| Entity Registrant Name | Welsbach Technology Metals Acquisition Corp. |
| Entity Central Index Key | 0001866226 |
| Entity Tax Identification Number | 87-1006702 |
| Entity Incorporation, State or Country Code | DE |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| 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 | |
| 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 |
| Trading Symbol | WTMAU |
| Security Exchange Name | NASDAQ |
| Common Stock, $0.0001 par value per share | |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share |
| Trading Symbol | WTMA |
| Security Exchange Name | NASDAQ |
| Rights, each exchangeable into one-tenth of one share of Common Stock | |
| Title of 12(b) Security | Rights, each exchangeable into one-tenth of one share of Common Stock |
| Trading Symbol | WTMAR |
| Security Exchange Name | NASDAQ |
