Larger file sizes can occur because of special geometry like TheTick has pointed out above (helixes, configurations, DT, etc...). Also there is a Shade file created every time you save your file. I think this file is a bitmap image. What this file does is, is when you pick the file from the OPEN dialog and you have preview checked, you will see it. That's all it does, but it takes up a lot of space when it makes that file. Only the UNFRAG utility can get rid of the file as far as I know.
But here are a few ways to help with that.
1) use an Unfrag utility. SW doesn't support this utility so it is a use at your own risk.
2) If your trying to email a file to someone.
a) You can Extrude a feature that encompasses the entire part.
b) You can suppress everything in the FM.
3) When you save the file move it off the screen so only your background is visible. This will help to make a smaller shade file.
4) You can do a save as and it will bring the file down but the next time you save it, it will grow back to the size it was before.
Check out Feature statistics. It won't tell you which features are using the most MB's but it will tell you which features take longer to open and that should indicate to you which features may need some simplifying.
I hope this helps...Best Regards,
Scott Baugh, CSWP
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