Downloadable models

Sites such as thingiverse.com and pinshape.com allow users to download models and most are ready for 3D printing. But to create your own 3D model you can download the following modelling software.

123Design

This software is good for building parts that are dimensionally accurate. This software is useful for people who want objects to fit into each other or to design prototypes.

123D Catch

This software allows users to take photos of a model with their smart phone or camera and then it will create a 3D model using the photos that were taken.

Sketchup Make

This software made by google, good for beginners to the 3D modelling world, It is full of libraries and tutorials to help develop the users skills. But make sure to check the file before exporting as an STL as the mesh modeller may not automatically stich the walls together creating a solid model required for 3D printing.