If you’ve experienced issues with uploading .stl or .obj files that are too ‘heavy,’ i.materialise is offering tips on how to change the setting in your 3D modeling software to allow for reduction of file size. i.materialise has a size limit of 100 MB and because of this, if you want to upload files to their site, you may have to manipulate some settings, as well as making sure you do not sacrifice resolution. For the best export, you should choose a tolerance of .01 mm. Once your file has been reduced, you should be able to upload to sites like i.materialise with ease. Read more at 3DPrint.com: https://3dprint.com/153381/imaterialise-stl-file-size/