1. A method, comprising: receiving a user selection of a first object of a simulated model, wherein the first object is a first surface of the simulated model; selecting a second object of the simulated model based on the second object being opposed to the received selection of the first object, wherein the second object is a second surface of the simulated model; generating an offset object similar to the first object, wherein a position of the offset object is based on positions of the first object and second object; and generating a manipulation tool configured to allow a user to change the position of the offset object relative to the first object and second object.