Ranging in size from twelve inches in diameter and four inches deep, to a monster I saw that was around five feet in diameter and two and a half feet deep. The heads are nailed, similar to the nagado-daiko. While traditionally carved from a single piece of log, it is possible to make stave construction hira-daiko relatively inexpensively and easily, if you have the proper tools. A how-to is currently being prepared. In the meantime, here is an image of of a hira-daiko body under construction .
Size is about two feet in diameter, and eleven inches tall.
Shime daiko are harder to make than the other drums in this section due to the involved nature of stitching the heads onto the rings. Arn Shimizu of Sonoma County Taiko has written about his experiences making shime-daiko for his group. Once you read the description and instructions , take a look at the diagram he provided to help clarify the instruction. Arn has also provided a lacing diagram for the rope used to tension the shime. Most North American Taiko groups make their own taiko out of wine barrels.