Scaling Problems - Blender/3DS Max to Slic3r to print

When I export my stl from max or blender, my file is miniscule and I have to scale it up tremendously to get it close to the exact dimensions.

At the moment I have worked out the proportional problem by scaling up prints anywhere from 2500 to 2800 times the size that it is imported as.,

Does anyone know the exact amount that a model must be scaled up in slic3r?

Thanks,
Jeff

2500 times or 2500%?

If 2500%, it's probably an inch->mm scaling issue, where your STL's are exported in inches but Slic3r expects mm. In which case, the exact scaling you need is 2540%, or 25.4 times.

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