[Kevan]

...it's only the fact I'm a 3D 'maker' myself I presumed 'file size' was referring to 3D printing, it would be much easier to find in a 3D sub forum like HRW & SCI.  I don't see 3DP as scratch building as it's a manufacturing process, you're not making it from raw materials your putting materials into a machine and it's making the thing for you.