Random change in Dim Scale Linear

[Anonymous]

AutoCAD LT - changes to dim scale linear property in paper space.

Been experiencing this problem occasionally over the last few years, especially since leasing LT a few years ago, but it seems to be getting worse lately.

Dimensions will be correct, but then the dimension will change on its own to some crazy scale - such that a 7'-6" dimension turns into 147'-3 5/8". It is so random, that it will happen in one drawing, but not in others. The change can happen after going from one layout to another, or from model space to the layout, or even just regening the layout.

We only use one dimension style. This is NOT related to selecting model/paper space objects, or annotative/not annotative. We've been using AutoCAD since the 1980's, so we are well versed in the difference. It's a bug in AutoCAD that needs to be fixed.

At this point we are doing a "match property" over all dimensions in a layout prior to every print job and before closing a drawing, to fix the problem. If anyone know of a solution it would be greatly appreciated.

[steven-g]

It's only a bug if everyone experiences it, and can repeat it. Can you post a dwg file showing a dim that has mysteriously changed, maybe someone can figure out what is going on? Unless another dozen people come along and say 'me too' then it could be down to something on your system.

You do at one point say 'we' are there more people in your organisation that can see this happen?

[cheryl.buck]

Hi @Anonymous,

I am sorry to hear you are experiencing this. I checked and did not find other reports of this issue being logged as a new or ongoing issue, but I am happy to help.

You mentioned this occurs in some files but not others, that sounds more file specific, possibly file or layout corruption. Do you start your drawings from a drawing template (DWT file) that was created in legacy version of AutoCAD, or from existing files? 

The following Autodesk Knowledge Network (AKN) articles offer suggestions on how to repair corrupt files. For corrupt layouts, it may be necessary to replace them. 

How to repair corrupt AutoCAD files

Optimizing the AutoCAD drawing file: Purge, Audit & Recover

If you need further assistance, let me know what version of AutoCAD LT you are using (and others you have seen it in), the operating system it is installed on, and share a sample file this is occurring in with a ScreenCast of the issue, I would be happy to take a deeper look to test if I can reproduce it or see what might be causing it.  

If a post was helpful, Likes are always welcome.

Please click the Accept Solution button for any posts that resolve the issue or answer your question.

All the best,

[lage]

I have experienced that problem from time to time. It's usually solved setting the variable DIMASSOC=1, and then matching properties from any dimension that is working correctly. 

Hope this can help.

Best regards.

[pendean · Accepted solution]

There is no bug if it only happens occasionally. And there is not fix for "occasionally".
"Occasionally" usually means something was missed due to operator missed actions or settings.

Nothing changes in AutoCAD/LT on its own.

What you are describing instances when snapping to objects while dimensioning being missed: as noted by the last reply, you have to pay attention to your DIMASSOC setting, ensure you are indeed snapping to objects (it is easy to get close but miss). Also note that there is a DIMREASSOCIATE command in AutoCAD/LT for a reason, it is to help you recover from these missteps.

Next time it happens, stop what you are doing, SAVE, then come back here, share the file and point to it. bet we can find out pretty quick what caused it.

TIA

[Anonymous]

OK I have a drawing that random;y changed the dim scale linear variable . how do I attach the drawing, 

[cadffm]

Walk to the thread where we are  https://forums.autodesk.com/t5/autocad-lt-forum/random-change-in-dim-scale-linear/m-p/10414525#M1904...

[Reply]

and open your eyes while scrolling .. see the picture below

[Anonymous]

HERES FILE

[cadffm]

Hi,

you talking about 3257160'-10 3/8" and 3111482'-6 5/8" ?

both are not fully associated! Turn on ANNOMONITOR or check this by STRG+1

3111482'-6 5/8" assoc just one the left

3257160'-10 3/8" just on the upper defpoint.

Use object snaps, use the right one and select the right points.

See my picture, you selected points:

1. (vertcal dim) is totally OFF an object

2. (hor) snaped not to the ENDpoint, it's just a "next point" snap.

Use snap option which snaps to a real object grip - like ENDpoint.

Sorry, i am out.

https://help.autodesk.com/view/ACD/2022/ENU/?guid=GUID-8B7E8C96-C30D-409E-881E-7942871E80DA

https://help.autodesk.com/view/ACD/2022/ENU/?guid=GUID-8F5E5431-9EFB-414E-BC6D-2C65EFB2DAC3

[pendean]

Thanks for the file: your dimensions are not actually attached to the corners of your objects, they sort of either float out in the air or someone used NEA for an Osnap on your objects (that should be turned off BTW, its a sloppy cadding option when dimensioning).

ZOOM very close to all your dimensions points then fix them. That should do it.

HTH

[Anonymous]

Thanks for the reply and have fixed the dimensions but it still reads bogus lengths. unless I am missing something. 

Something has changed my "Dim Scale Linear"

[cadffm]

add.

And another thing of my personal DO NOT list is,

don't use an endless float number for your viewport scalefactor.

An in your case here, i would set the dimensions in modelspace,

it doesn't  look very important that the printed dim-text hight is perfectly, or?

[cadffm]

"unless"

Upload your file and we can check what you did (wrong)

[pendean]

>>>...but it still reads bogus lengths...<<<
Recreate the dimensions from scratch (yes, erase the old ones) instead of "fixing" the existing ones, see if that helps.

[Anonymous]

Yes that will fix the problem. But I am trying to find out what caused it to go bogus so that we donot do it agian or can watch for it. 

[pendean]

@Anonymous Your dimensions lost association due to what appears to be less-than-careful drafting. But AutoCAD offers no ability to perform a historical search for previous actions, unless you recorded yourself 24/7 of course with a 3rd party app or camera or both.

HTH

[steven-g]

Make sure you only have essential osnaps turned on, definitely turn off NEArest and NODe, and be careful with the END osnap if you use a short offset for the ends of the dim extension lines. And when placing dims maybe you need to zoom in a bit more when picking where the dims are going. 

[cadffm]

The other layout is a better sample for a "random problem".

It looks good (defpoints are on the same position as the vertex/endpoint).

But we can not say why it happend in this case, because we don't know the history..

One Question: You locked the viewport first, then you created the dimensions?

Because a middle mouse button action can break the association..

Or you had othe objects there, at tge same point, and the dimension was linked to this object. Later you erased this object.

Just "simple user issues" what is possible, i don't say this was the case -

we can not kniw it.

Normally it works well on (modelspace) polylines and lines.

Isn't easy to say without knowing the history in detail.

[bareiff1]

It's a bug.  Happens to me all the time and I am the most **** snapper around.  Unexplainable as user error, this is a system design flaw.

[pendean]

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@bareiff1 wrote:

It's a bug.  Happens to me all the time and I am the most **** snapper around.  Unexplainable as user error, this is a system design flaw.

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If you believe it to be so, you'll want to inform Autodesk about it where they look for user feedback, here is the link https://www.autodesk.com/company/contact-us/product-feedback