For some reason, I can no longer add linear dimensions to any drawing!
I have a large assembly-drawing that I was modifying and making satellite drawings from, and that has many key dimensions I don't remember giving me any significant problems. It was laborious editing their properties to make them legible and consistent in appearance, but they all worked. Even though I find the maze of dimension types confusing and the User's Guide makes it even worse.
Diameters and radii seem to work, but even experimenting on dimensioning a plain rectangle divided into 4 by 2 centre-lines fails.
As I understand it, all dimension types needs snaps to locate them properly. So I set the appropriate (or least inappropriate?) snaps, pick any of the linear dimension tool that looks sensible, and select the entity to be measured. It used to work, but now either:
The drawing generates the dimension, but if I drag it away from the outline it creates a message about no snaps in snap aperture, so I need turn the Snaps off. This is even if it's selected the right part of the object in the first place. That leaves no choice but to draw the dimension by eye so obviously not accurately.
OR Sometimes at least, I can leave the dimension on the entity outline, click away from it, then Select it and use a Delta move to place it properly - only it has no extension-lines indicating the start and end points.
I've tried everything I can think of - using the supplied templates and letting TC decide what layers to use, placing everything on one layer, trying different dimension tools, different snap types..... I thought I found a solution of sorts, by right-clicking on the active dimension with the main snaps off, and selecting a Local Snap; but I think the once or twice this worked was pure chance.
Some dimension tools produce a little tool-bar in the bottom-left of the screen, but this doesn't help. I don't remember seeing that until very recently, and I have not noticed which particular dimension type it's for.
Whatever I try, there is no pattern to anything. Quite simply, I can no longer rely on properly dimensioning even the simplest drawing: just occasionally it works, but I have no idea why.
So what's gone wrong please?
Otherwise I've no choice but dimensioning everything by eye, non-snapped, and editing the texts to the right values.