The model Stirling engine is a staple of novelty catalogues, and we daresay that were it not for their high price there might be more than one Hackaday reader or writer who might own one. All is not lost though, because [jirka.luftner] has posted one on Instructables which eschews the fancy machined brass of the commercial models and achieves the same result with an array of salvaged parts.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/03/28/a-stirling-engine-from-minimal-parts/