[3dsmax into Cura Scaling Issues]

Technical answer (Valcrows solution will work, just explaining a bit better what is happening)

The problem is that STL isn't defined what the "unit" size is. And models are stored in "units". Now, most applications agree on the fact that 1 "unit" is 1 mm. But some applications work with 1 "unit" is 1 inch. Now, as whole of Cura works in mm, it's logical to have 1 unit = 1 mm.

 

Since this is likely to be a very common problem, is there a way to specify that a file is in inches during the load or perhaps the preferences? I have 4 other CAM programs that all handle this properly, so it seems like it couldn't be too hard.

Autocad Inventor STL files have the same issue, though the Inventor files are off by a scaling of 10

 

[Scale issues exporting STL from maya importing into cura]

I am having the exact same issue with Autodesk Inventor. The STL file renders at .1 times the correct size. I have imported the same STL file into two other CAM programs correctly, so it appears to be a Cura issue.