Export IDW to Autocad DWG weird scale

[bmilano]

Hello everyone,
i found a serious problem exporting from Inventor IDW to Autocad DWG:
The exported DWG file has the correct dimensions, but the geometry has been scaled! Even though i chose the correct option when exporting.
Apparently Autodesk is aware of this (https://knowledge.autodesk.com/support/inventor/troubleshooting/caas/sfdcarticles/sfdcarticles/Expor...).

The problem is related to the scale of the view in inventor which presents decimals (in my case 1: 8). So, I can't use custom scales otherwise the export generates incorrect files?
Exporting to DWG is required for sheet metal cutting, so you risk creating wrong pieces.

I use Inventor 2021 with last service pack and update.

I attach one video where see the problem.

Best regards.

Bruno Milano.

[mcgyvr]

Have you tried just exporting from your ipt file instead?

https://knowledge.autodesk.com/support/inventor-products/learn-explore/caas/CloudHelp/cloudhelp/2014...

[bmilano]

Hello mcgyvr,

if export from ipt file, dwg is correct.

I export from idw because add more information (dimension, note etc).

Thank you.

[admaiora]

Hi,

can you attach the part and the drawing?

[bmilano]

Yes,

i attach idw and iam with part.

In the idw is the sheet numer 2 where is the problem.

Best regards.

Bruno Milano.

[admaiora · Accepted solution]

Hi Bruno,

Can this other option work for you?

[SharkDesign]

I discovered this issue about 5 years ago.

Are you dragging the corners of the view to end up with the scale? I found that if you did that sometimes it came out wrong, but if I typed in exactly the same ratio and press enter it would then work. 

[bmilano]

Hi admaiora,

yes this option work, but not export annotation and derived view.

[bmilano]

Hi jameswillo,

i changed scale with dragging or type exact ration, but the problem is already present.

Best regards.

[admaiora]

Hi Bruno,

in that way you can only scale all in AutoCAD with scale with reference

[bmilano]

Yes,
I could rescaling in autocad.
But not all views have the same problem and I should check all files that are exported.
I do not think it is the correct way, in fact with a scale of 1:10 or scales without decimals there are no problems.
Export in dwg is used to send directly to production.

Thank you.

[bmilano · Accepted solution]

Hi everyone,

i send files to Autodesk Support, and give me a solution.

In to the idw is present one view (first view) out the sheet witch scale 1:10.

All others view in the sheet have scale 1:8.

If set 1:8 scale also first view (out the sheet) or delete this view, dwg exported is correctly.

But, i don't understand why rescaling dwg in case two different scale in the idw.

Best regards and thank you everyone for help.

[SharkDesign]

Because as shown in the drop down in reply 6 your export will be set to 'base view.'

View 1 is the base view and so that will be 1:1 and everything else will be scaled to look right on the page but not be 1:1.