I'm thinking I want to build myself a kettle with a heater, a valve and a cooling coil. So four holes. probably, two different sizes
Perusing the electricbrewery.com site, they stress the need to use a chassis/radio punch, but they're expensive. For the same price, I could get one of the sets sold on ebay or harborfreight.
Reading around other sites, I read the elements typically are 1" National Pipe Straight Thread. This measures 1.3" which is the size the conduit punches produces.
Given the standard conduit hole sizes, some washers and a high temp o-ring, can I get a good install using this combination?
Is there more than one size heater element (the mounting portion)? Different threading? something else I'm missing?