Hi everybody,

I have a very simple part with only two features: a boss extrude and a mirror:

I'm trying to find out why this file is 276 MB in size and it takes about half an hour to open! Of course, I can delete the file, create a new one and forget about everything. But that's not the whole story; I have another file of the same size but with about 40 features that opens really slow and painful. The file was ok a couple of days ago. I have many larger files that are less than 10 MB in size. So I decided to make a copy of the file and delete the features one by one to see which one is the cause of all that trouble. But the file size (276 MB) didn't change until I reached the second feature in the feature manager which is a "body mirror". After deleting it, the number 276 suddenly became 5. But why does a mirror feature have to be so large, and besides it wasn't like this before. I would appreciate any help with this problem... and sorry for my wierd English!

Thanks in advance,

Ben