In this overview Chris Plush from cgmasters.net shows you some tips on prepping your 3D models in order to upload them to i.materialise.com for 3D printing.
Here are some more tutorials and how-tos on our blog:
Creating a Chess Piece in Blender https://i.materialise.com/blog/tutorial-creating-a-simple-chess-piece-in-blender/
5 Mistakes to Avoid When Designing a 3D Model for 3D Printing https://i.materialise.com/blog/5-mistakes-to-avoid-when-designing-a-3d-model-for-3d-printing/
5 Essential 3D Modeling Tips for 3D Printed Jewelry https://i.materialise.com/blog/3d-modeling-tips-for-3d-printed-jewelry/