Hi Luke, VRML is an old file format. Try X3D if possible. It is the successor to the VRML file format. What program are you using to reduce the mesh size? Blender is okay, but not perfect. Mesh Mixer seems to be the new standard for prepping print files, although 3D Coat is also great and has a 30 day trial. Many people use Z-Brush as well. You may also want to try using the NIH 3D Print Exchange here, to create and share the print file: https://3dprint.nih.gov/ I’m sure other people may have suggestions as well. Good luck! Jeremy On 4/12/18, 10:55 AM, "Luke Kendall" <luke.kendall01@gmail.com> wrote: Hi I have a PDB file of Chromosomes and I am trying to color and convert the file to a VRML file. I am doing this so I can get the model printed, but the file is too large for the printing company. I need to reduce the file size, but I am having trouble doing this _______________________________________________ Chimera-users mailing list: Chimera-users@cgl.ucsf.edu Manage subscription: http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users