Rocktopus is a popular Lulzbot model, converted to X3D.
Large file size is difficult for current X3D conversion stylesheets to handle
Rocktopus by Kent Johnson is licensed under CC BY-SA 4.0 and derived from work by dietz1 and yeoldebrian.
Meshlab X3D Exported, http://meshlab.sourceforge.net
X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit