question about isometric view

[Mohamed32Samy]

Creat an isometric view based on views

how can i do it please ?

[S.Faris]

I believe your question here is, How to create a Isometric view from existing views?

If that's the case refer to this : Isometric drawing in AutoCAD, tutorial with video 

you can also find couple of tutorials in youtube, on this matter.

[dbroad · Accepted solution]

Hopefully, you have a teacher and textbook.  If not, I would encourage you to take a class and get a drafting book.

See the screencast.

There are 2 basic approaches that work well:

1)Using the dimensions given in the views, set snapmode to isometric and polarmode to multiples of 30 degrees. Then using direct distance entry, trace the outline of the object and infill the connected edges.

2)Draw the 3d object represented by the views and use base view or flatshot. If using flatshot, scale the results by 1.22474487 to get a dimensionable object.

[dshaw9P2W45]

@dbroad 

Thank you for the methods on how to easily draw in isometric. That is soooo helpful.

Unfortunately, I have never had any formal training in AutoCAD.  I learned to draw in the early 1980's by messing around.  I was a CAD draftsman for a while.  But my formal training was with an ink pen on sepia.  Yup, I am that old.  Regardless, I have tinkered for years.  I even have a 97 version for home use 🙂  .  I have the 2022 version for the work I do for the University.

I am struggling to dimension in the three planes.  I have tried ISOPLANE and changing the view plane I am in.  I was wondering if you had any hints on where to look for answers.

Thanks so much.

Deb Shaw

Elon University

[dbroad]

@dshaw9P2W45 

I'm familiar with all those methods and taught and used them. As to your question, if the isometric is drawn in the xy plane as a flat projection, then to dimension, you should first set up 2 text styles:

• iso1 with an obliquing angle of -30 degrees
• iso2 with an obliquing angle of 30 degrees

and then set up 2 dimension styles:

• iso1 that uses iso1 text style and text aligned to dimension line.
• iso2 that uses iso2 text style and text aligned to dimension line.

Then dimension the isometric with one of those styles (only in one of the orthographic directions).

To adjust the appearance of each dimension, either use dimedit oblique -30 or 30. If that doesn't make the dimension look right, use the properties palette to choose the other dimension style. Here is a picture of the result of dimensioning a cube:

If you prefer, like I do, to draw a 3d solid, it's easy to dimension in one of the orthogonal planes but setting the ucs to one or other of the faces of the isometric as appropriate and then dimension.  No need to set up multiple dimension styles with that method.

Another method is to model using solids and then use flatshot to create the various projections.  Problem with isometrics is that the isometric view won't dimension correctly unless you scale it by using the reference dimension method. Two dimenison styles are helpful with that approach.

If you prefer to draw a 3d solid and then use viewbase methods to draw the multiviews, isometrics, sections, and auxillaries, then you must dimension the orthogonal rather than the isometric views.

HTH

[dshaw9P2W45]

@dbroad 

Perfect.  That is just what I needed.  Much appreciation for the work you have done on sepia (maybe even vellum) and for training the young folks that I need to do drawings for the construction industry.  Hugs.

Deb