What's to best user friendly program to clean up a 550mb 3d scan?

What’s to best user friendly program to clean up a 550mb 3d scan?

Free? I would see if Meshmixer would work for you.

Depends on what you mean by ‘clean up’ but Meshlab has many powerful tools for that sort of thing. Unfortunately It’s not really ‘user friendly’ if you don’t know what you’re looking for (it has a lot of options all based on academia terms), but a google search for the topic you’re after is usually the approach I take.
http://www.meshlab.net/

@Eric_Pavey Thanks for the responses, I have downloaded meshlab and currently trying to figure out the functions. Clean up meaning I have a detailed scan of an F-15 flight stick, it is so detailed that it also scanned all the worn out imperfections. What I would like to do is clean it up to a near perfect condition and then 3d print it.

@Adrian_Rampersad Just remember that cleaning up 3D scans is actually a profession in itself so don’t expect the process to be easy. I had a company come into my work to demo a $60,000 scanner and it still took them a whole week to send back the final cleaned up model and it wasn’t perfect.

To 2nd what Chris Macier says: We have those people at my work, and indeed, it is a job. If you scanned some ‘real life imperfection from the old stick’ and no longer want them: First you’d ‘clean up’ the scan so that any scan-related imperfections are removed (holes, weird vert globs, etc), and Meshlab is good fort that. Second, you’d take that cleaned-up result into poly modeling software (Meshmixer was mentioned above, or things like Sculptris, ZBrush, Maya, Max, Blender, etc) to then artistically remove the old wear and tear. Since those were ‘real’ imperfections, the software isn’t know to know that you don’t want them, only a human will.