Drill, baby, drill!
Drilling through 8 inches of concrete above your head is a tiresome job, but somebody has to do it...
https://v.nostr.build/2hceNIyDVEEj4spf.mp4
That somebody is the apprentice.
https://v.nostr.build/XqWc42aTfOwb3FjO.mp4
Now, just install the pipe.
#Plumbing
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