dimensioning a theoretical sharp corner

[Dazed and Confused]

I'm havin' problems dimensioning to a theoretical sharp corner where two lines meet and a fillet radius is created. No matter how I lock, freeze or close the layer that the dimensions are on, they always move a few tenths. It happens the moment I enter the fillet radius. Here's a little description of what I'm doing:

I create a series of lines and angles (my object), and I lock the layer.
Then I put in all my lengthwise (horiz) baseline dimensions from left to right and lock this layer. Next I unlock the object layer and fillet a small radius at every vertex, where an angled line meets a straight (horiz) line. These angles are very slight, 2 degrees 35 min. ( or 87 degrees 25 min. as autocad reads them) Here's a sample of the co-ordinates:

@.0423,0
@.0022,.0488
@.1405,0
@.0022,-.0488
@.4743,0

I fillet .003 radii at the two lower corners of this sample, and fillet in .010 rad at the top two corners.

If anyone can make sense out what I just posted and has some insight I would be grateful.

[42]

If you are able to post the drawing it would be a great help.

[megamike]

I sounds like your dimensions are "associative"
they will adjust when the object they are associated with is modified. When wou fillet the 2 lines, the length of the lines changes and the associated dimensions adjust automatically.
to turn off associative dimensioning type in "dimassoc" at the command line, and set the value to "1". If you want your dimensions to be set to associative globally and only want to remove the associativity from the dimensions you are having the problem with, type "dimdisassociate" at the command line. you will be prompted to select the dimensions to remove associativity from. you can remove the associativity from these dimensions before you fillet the lines.
See "associative dimensions" in AutoCad help.
Good luck!

[Mr T]

Or

Adapt the DIMSTYLE text.

Nick

[megamike]

Or

Adapt the DIMSTYLE text.

Nick

Now i'm confused
are you suggesting overriding the dimension text?

[Mr T]

Or

Adapt the DIMSTYLE text.

Nick

Now i'm confused
are you suggesting overriding the dimension text?

Could be forcing a position or even the UNITS are rounding up ?

Nick

[Dazed and Confused]

Mike,

Thanks, you spelled out the procedure very clearly, I'll be taking a crack at again tomorrow. I work for a small custom cutting tool manufacturer and TSC's are standard designing procedure for us. We're in the first stages of adopting autocad and throwing away the "boards".

[Dazed and Confused]

MR. T,

Altering the text would work for me in many circumstances, but a lot of my designs are gonna be loaded directly to CNC machines and the geometry needs to be programmed to either TSC's or tangent points. The geometry and the dimension points must match precisely, otherwise the programmer has to make some adjustments. And we don't like to let those guys do too much thinking, It's bad for business.

Funny thing is that all four of the TSC's (in the sample above) change by different amounts. Three of them change about .0004-.0008 and the last one changes a whopping .008. Theres no rhyme or reason as to where they wind up.

[Dazed and Confused]

42,

I would've liked to put up the drawing, but I'm working off a student edition and I don't always have easy access to it.