Share Email Facebook Twitter LinkedIn Video: Circular Manhole - Model the Base This video demonstrates how to create the base of a circular manhole in Autodesk Inventor. Video Player is loading.PlayPlayMuteCurrent Time 0:00/Duration 5:00Loaded: 0%0:00Progress: 0% Playback Rate2x1.5x1.25x1x, selected0.5x1xDescriptionsdescriptions off, selectedCaptionscaptions off, selectedChaptersAudio TrackFullscreenThis is a modal window.