Wont SLice

[Cheinblade 0]

Im trying to slice a lithophane print i designed and cura will not even start to slice the file. it just says slicing for hours.  i have the latest version and i have tried restarting, remaking, and running as admin. 

[gr5 1,762]

I'm guessing "too many triangles".  How many triangles does it have?  Or how big is the file size?  There are 2 formats for STL files - one is about 50 bytes per triangle and the other is about 175 bytes per triangle.  Anyway I would say 100MB is probably about the limit for a file size for an STL.  Any larger than that and you probably have features too small to print.

 

Here's one trick to reduce the triangles: http://www.shapeways.com/tutorials/polygon_reduction_with_meshlab