Finally, at long last, I have everything I need to start work on the 6N1P OTL Tube Headphone Amplifier build project, right down to the last nut and bolt, I popped into Jaycar this afternoon to buy some rubber grommets, and some M4 washers, Bunnings had the Craftright Hole Saws in stock too, so I bought a 5-piece set, one of the Hole Saws has a diameter of 32mm which is about the right size for the can caps, the Hole saws are made from hardened steel which should be fine for cutting holes in diecast aluminium which is softer, I just need to let my cordless drill charge overnight, so tomorrow it's Game On!!!
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