We're have this problem at work where our files are getting bigger everytime we save the file. We're running autocad 2008
I've tried purge and export to autocad and those didn't work. Export to autocad did reduce the file size but once I would save it bumps up the size again. Our file would normally be 2mb but it would jump up to 8-9mb.
 
Any insight on this would really help as it's causing our files to open slow
 
Thanks!CAD2062009-05-27 01:28:16

 
 
Try to copy all objects from current drawing to
new empty drawing.
 
 dannyboy1002009-05-27 11:45:57

This might help:
http://www.cadforum.cz/forum_en/forum_posts.asp?TID=2026

What are these entities? If each one is composed of two lines that make
a cross for example, then you could make a block out of this cross and
then replace each set of two lines with a single block definition.

If these entities are just POINT objects, I doubt this exercise will save much file size...

You could also WBLOCK the "Static" entities out to a separate DWG file
and then XREF it back into the main drawing. When you don't need to see
this stuff, you could unload the XREF, then load it back for plotting
for example.

Do you save the drawing into lower CAD version? If not sure, try to saveas it, and see the popup window if shows you it will default save the drawing into a lower version.  You can also check your configuration: enter 'options' in command line of AutoCAd and switch to the 'Open and save' tab to see your default saveas drawing version.
Hope this helps.
 
Seans Swaleshttp://www.autodwg.com/
 SeanFtS2009-06-05 08:07:55

Often overlooked is the "registered applications" problem.  On the command line type "-purge"  The hyphen is to get the command line version.  Next, select "R" for Regapps.  At the next prompt, accept the wild card "*".  The next prompt is to verify each registered application, and you'd be well advised to select "N" for no.  The most I've found is 114,012.  Another aspect of this problem is the registered applications propergate from one drawing to another when a drawing with some in it is xref'd into another.  All your drawing should be purged to prevent them from spreading. Here is a lisp routine that automates the prompts:
;Purge Registered Apps by Paul Sanucci(defun c:pura()(command "-purge" "r" "*" "n"))