Interesting track saw

This build uses pipes for the sides to guide the circular saw. And to connect extensions. I like this build overall, the cost is under $50 and at the end the author puts in some more improvements. Oh he is using 3/4 conduit for the pipe.

https://www.homemadetools.net/forum/emt-conduit-track-saw-3-piece-made-2-power-tools-%2450-78176?homelistings#post153770