It has become apparant that the use of true ISO views by default is not a worthy quest by PTC.
In my world, however, it is very important.
Although a dynamic orientation of 45 and 35.264 is close, it is not a true ISO as you will see by the datum planes not lining up.
So here goes a how-too to easily set up your 1st ISO view -correctly- from which subsequent ISO views can be created.
this process can be done at anytime in any model.
1) If you haven't done so already, open a part or assembly. We will start with a blank part so an ISO view can be added to a fresh template.
2) In order to have a completely virgin part, an empty template is selected.
3) Click on Coordinate System. The default coordinate system will be created.
4) Click on Create Datum Plane. The 3 default datum planes will be created.
5) We will extrude a cube.
6) Set the cube size common to your general application.
7) Cube is center-offset to the same as the sketch size; in this case, 5 (...this is important!)
😎 Create a Datum Plane using the 3 points on the cube as shown; upper left, upper right, and lower corner.
9) Create a perpendicular plane to DTM4 with 2 points used previously and DTM4
10) Reorient the view as shown in the dialog. DTM4 is the Back and DTM5 is the Bottom (due to their creation order).
11) Name this view TMP and Save (you will see why in a second).
12) Delete the Extrusion, DTM4 and DTM5.
13) Restore the view TMP (reorient/TMP-set). Note the error on the status bar. Now name a new view ISO1 and Save.
14) Delete view TMP (Hint - View TMP no longer has its references where ISO1 didn't use any, hense the error.)
15) Your datum planes may disappear now since the model no longer has a geometry-defined bounding box. No worries. Restore view ISO1 if needed.
16) Use Dynamic Orient, Model (not view) and move the Y-axis 90 degrees at a time. Save the new view as ISO2.
17) Rinse and repeat... ISO3, ISO4...
18) To obtain the ever popular "upside down ISO", restore ISO1 and reorient about the X-axis at 180 degrees.
I would have been happy to do this in a video to make the images lighter but I do not have the means at this time. However, I hope you caught the subtleties of this process.
Again, you can do this anywhere in the model creation process. I often have to do this on the fly.
If the view extents are not to your liking after creating a model, you simply restore the view, zoom extent, and save the view again. This will customise the view to your model once geometry has been created.
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