SAN FRANCISCO—Microsoft executives said Thursday that they have built in the Autodesk “Spark” 3D printing platform into Windows 10. Autodesk launched Spark as an open platform a year ago, when the ...

Ordinarily, if you want to change the shape in which an object is 3D-printed, you have to alter the computer model that tells the printer what to do. A new and simpler technique, however, allows the ...