Desiging a new bike
Making a bike is not easy. This process is called “tempering”, and it makes the metal a lot stronger than it was before. The barrelhead is now able to withstand the rigors of the tuning process. template is used to mark the placement of each note on the sunken head of the drum. Lines are drawn in pencil to guide the tuner’s hammering. Each note outline is then “grooved” using a nail punch and a hammer beach cruisers. Grooving the notes make the notes more visible and also isolates each note’s vibration somewhat from the other notes in the drum. It is very important not to weaken or break the metal with the nail punch the bikes.