File size after DWG import

RonanR · 31 Jan 2011, 12:32

Hello,

I've just imported a 2D CAD dwg plan.
The source dwg plan is 3.9MB in size. The resulting import into SU Pro 8 is 17.5MB.

And I don't know why...
I've noticed that there are over 3000 component instances, everything from arrows to text etc. are components.
Is that the problem?

Exploding the model has resulted in repeated 'spinning wheels forever' type situations, only cured by Force Quit on a my mac...
So my question is: why is the SU model so large, and why it it so?
Now that I have to elevate this and add my own components, I'm afraid the whole thing will become just too large too quickly...

Any help appreciated.

Ronan

TIG · 31 Jan 2011, 14:07

Make sure you purge the CAD drawing before import and purge the SKP after import...

RonanR · 31 Jan 2011, 14:31

@tig said:

Make sure you purge the CAD drawing before import and purge the SKP after import...

Thanks for that. Purge the SKP means purge unused layers?

HFM · 31 Jan 2011, 14:34

You should also know that importing a *.DWG in Sketchup will result in all your arc's and circle's being converted to individual lines, thus increasing the size.

honoluludesktop · 31 Jan 2011, 15:12

From menu bar: Window > Model Info > Statistics > Purge Unused

TIG · 31 Jan 2011, 15:39

@hfm said:

You should also know that importing a *.DWG in Sketchup will result in all your arc's and circle's being converted to individual lines, thus increasing the size.

It will import arcs with 24 segments if it's a proper 3d dwg...
I have a tool to increase the segmentation of 'unconnected' arcs/circles...
There are lisp tools available to explode arcs/circles in a copy of the dwg before import too...

RonanR · 31 Jan 2011, 19:03

Thanks for all your inputs guys... appreciated...
I'll have to try various things and see what works for me.

Best wishes from London...