>>918725>>916530Problem with making your own cob pipe isn't the method, but the materials.
Most modern varieties of corn have been bred (or genetically engineered, whichever you prefer) to have much smaller diameter cobs than older varieties from 50 years ago. While this makes for corn that matures faster and doesn't need as much fertilizer, it also makes for cobs that are too small for pipes. By the time you get walls thick enough to hold an ember without burning through, you either won't have a hole wide enough to fit our finger into, and/or it's not deep enough to fit more than a small amount of tobacco without having a bowl bottom that will burn out in the first few times you smoke it. To make a very good corncob pipe, you need a corn strain with oversized cobs, an Missouri Meerschaum developed for their own pipes.
Also, corn cobs are naturally very wet. Missouri Meerschaum dries their cobs for 3 years before making them into pipes. I'm not saying your own cob pipe has to be dried out that long, but some drying time IS necessary to make it useful, and it's not a small amount of time.
Probably a better material to use, especially given your location, is some sort of fruit wood like pear or cherry. Both have long histories of use in pipes, are inexpensive, and are easy to work.