Y Combinator Retweets Ultrasonium Metal Parts Manufacturing Post

The official Y Combinator account retweeted a message from @ultrasonium. The post states that the team is building a new way to manufacture complex metal parts. It references technologies defining this century, including data centers. The retweet was shared by the account known for backing AI companies and appears under the ai topic. Source posts show no further details on the technology or independent confirmations of progress.