Virtual reality (VR), augmented reality (AR), and/or mixed reality (MR) systems may enable one or more users to connect two or more connectable objects together. These connectable objects may be real objects from the user's environment, virtual objects, or a combination thereof. A preview system may be included as a part of the VR, AR, and/or MR systems that provide a preview of the connection between the connectable objects prior to the user(s) connecting the connectable objects. The preview may include a representation of the connectable objects in a connected state along with an indication of whether the connected state is valid or invalid. The preview system may continuously physically model the connectable objects while simultaneously displaying a preview of the connection process to the user of the VR, AR, or MR system.