Hi I am new to the whole 3d modelling and using 3Dtin created a part for a toy. I am unsure how to gauge the size of the product and am on a budget. If any one can help it would be great. the 3dtin model - http://www.3dtin.com/ymwe p.s. when importing I selected millimeters. If this helps
Download your file as STL. Get a copy of https://www.netfabb.com/basic.php You can measure, repair, rotate and scale your file here. Read the Design Rules for each material. Shapeways does not usually allow multiple parts in a file except for earrings and a pair or set of something. You will have to join your parts together with 'sprues' or make a 'cage' around them.
That's only for Silver and Steal. You can use multiple Parts to a file if the parts are big enough. Small small parts must sprued together, or they will go through the drain by the cleaning process To Check the cost and the automatic checks I sometimes upload a in between model. Than you can se if something is totally wrong and you can see in the price category.