Isometric dimension

[aura6aura]

I'm using Autocad 2007 at home and Autocad 2004 at my school computer lab. and I have an assignment of this Isometric drawing. I need to put all dimensions and here I have problems to make the extension lines in isometric angle. Here are the snapshots of my work:-

In autocad2004, I could put the extension lines in this way
http://members.lycos.co.uk/kelseeexx/snap044.jpg
http://members.lycos.co.uk/kelseeexx/snap044.jpg
but in autocad2007, the extension lines won't go parallel with the straight line. I used aligned dimension for both.
http://members.lycos.co.uk/kelseeexx/snap043.jpg
http://members.lycos.co.uk/kelseeexx/snap043.jpg
Any suggestion so that my dimensions can be exactly like in autocad 2004???
thx in advance

[riga]

Move your UCS (0,0,0) on one of the end point of the line you want to dimension... and then use aligned dimension

[Lazer]

Or type UCS enter 3 now select 3 places on the cube to align your UCS

[Hedgehog]

Guys... I don't think it's a 3d drawing... it's a 2d isometic.

It works OK in 2007 & pretty much the way I remember it in 2004... _dimaligned & pick your points then _dimedit & Oblique & pick the dimension entity, then pick 2 points that you want to oblique to... in this case 2 points on the vertical line or type in 90. The text & arrows don't oblique any more for some reason (?) but the dim lines should be placed ok.

[Lazer]

Guys... I don't think it's a 3d drawing... it's a 2d isometic.


Hi Hedgehog, my way will still work if it's a 2d Isometric or a 3d model, all he will be doing us rotating his UCS so the X and Y are in the correct plane:wink:

[Alan Cullen]

I'm not sure, Lazer. If my memory is correct, isometric runs 30 degrees off the horizon both directions. That leaves a 120 degree gap, not 90 degrees. I guess he could do it by setting the ucs up for each side of the drawing.

I'm just trying to think way back, so I could well be wrong.

[Alan Cullen]

I tried both methods, and I got nowhere. I guess I'm just dumb. :(

[Strix]

just out of curiosity... why are the arrowheads in the given example at a different orientation to the text in the dimension? :huh:

[Thaumaturge]

It is quite a long time since I dimensioned in isometric mode but if I remember correctly I used the method as described by Hedgehog with the appropriate obliquing angle - aligned and oblique dimensions are explained in AutoCAD help. Also, because I like my drawings to look right, I created text and arrow styles to align with the plane of the dimension. I don't know if that's the correct/best method but it works.

[chrisdarmanin]

yep hedgehog is right, i remember doing it in school