This is a device that connects to the handle of a trombone slide to enable smaller players to play in 6th and 7th position. It is roughly 5.5 inches long and 2 inches at the widest point. The round head part attaches to the handle on the trombone slide and is .5 inches in diameter.
I thought a resolution of .3 would be ok, since it doesn't have to look pretty. It should print flat, but supports are needed for the curved end section.