Don't worry about the ambient noise, it was not intrusive. I think near the end there is the usual burst of a distant police/ambulance siren, which any city dweller can tune out. But that was not loud.

The day after this podcast and drooling over the sounds of beeps, clicks, tools, battery manipulations etc. which let me visualise the workbench so vividly, I heard mention of something called ASMR (automatic sensory meridian response), for which a lot of stuff is appearing on Youtube nowadays. It's sounds that generate a response that feels like a pleasurable tingling of the scalp, down the spine etc. The stuff on Youtube is all typified by women whispering, turning the pages of a book, drumming fingernails and stuff like that. But the workshop sounds and tthe infectious enthusiasm in your podcasts qualifies.

Maybe I'm more subject to this kind of stuff because I'm blind, no idea, but the sound effects were great