Zooming then model disapears

syburn

I have imported a simple acad plan. Then redrew over the plan to make a SU face (a few faces actualy).

Now I want to start to model the walls etc but when I zoom into the window, the model sort of clips and disapears.

I looked at the Model info and saw that it seemed very big, so i deleted the Cad layers which reduced line count from 14000 to about 152- but still clips and disapears when zooming.

Any tips would calmm my stress in the office.

LOBBY.skp

P: syburn

rhankc

syburn,
you seem to have some cad stray pieces in there somewhere, and you are at a very small scale.
I would open a fresh SU file, window copy to clipboard a very tight box around your floor plan get just what is necessary from as close as possible: Past it to the new open file, and rescale the drawing. Use 1:1 size on your floor plan. If your copy paste reacts the same way in the new file, do it again a little differently, you probably grabbed the troublesome cad floater!
hope this helps,
Hank

elmer

Hi syburn,
First erase the construction lines then if you do a "select all", you will notice a little line far from your model, erase it and everything will work fine;
Hope that help,
Regards,

LOBBY.skp

Patrice

elmer

Woop, sorry i attached the wrong file, here comes the corrected one!

LOBBY corrected.skp

dylan

That still clips Elmer.
What Elmer says though is correct and is normally what may cause this. I just use Zoom Extents to see where the offending extras are.

Another problem is you are so far away from 0,0.

I also noice you have extra lines on your imported drawing which should not be there. It is also not on the ground plane.

I would suggest making sure it is cleaned up corrctly before importing from ACAD.
Try the Flatten command, Overkill, Purge and Audit.

Make sure you import at correct units/scale also.

Go back to acad, get rid of all the extra lines and text etc, place all remaining on 0 and run the commands I mentioned. Hopefully this may improve things.

Tobobo

I find that i have to import Cad files in mm or scale them up once imported. SU does have a small enough incrament for working in metres

What i mean is 1 unit = 1 millimetre as apposed to 1 unit = 1 metre

Hope i haven't confused you too much

syburn

@unknownuser said:

I find that i have to import Cad files in mm or scale them up once imported. SU does have a small enough incrament for working in metres

I did draw to scale in mm, but when i imported it the dimensions all seemed wrong (so i used tape measure to change model scale).

Anyway i ll try all your tips now as see what happens.

P: syburn

syburn

@unknownuser said:

you seem to have some cad stray pieces in there somewhere

What is the way to look/see find these stray cad pieces?

P: syburn

rhankc

I say that because the dispaly all made your drawing very samll on the screen. I didnt see them, but elmer did, Your drawing was really unco-operative, so I opened a new session and copy/paste the plan to a new session and it corrected itself. You were right, about the tape measure, I work in imperial, but slect two points, tell the system what you want it to represent and select yes.

import your cad file to another file, it willcome in as a componenet, leave it as a component, if it disappears when you do a zoom extents your text, dimensions or something is messing with you. If it comes in ok trace over and around it and watch this video: Working with CAD:
http://www.go-2-school.com/podcasts/020

elmer

Here is an image to show where that little line is.
Patrice

syburn

oh thanks everybody, i understand now and managed to import again from a block (im using autocad LT 2006 and seemed not to let me purge or overkill or flatten so a block seemed to work ok).

I have developed the whole thing now and I have posted it in the rendering gallery. Not so happy with it though.

P: syburn