Sketch lines for fill dissapearing in IDW sketch

[Anonymous]

Sketch lines in an IDW view sketch are dissapearing when attempting to do a
fill (see attached screenshots). I cannot figure out why or how to correct
it.
You can see a small portion has been given a heavy "Sand Fill" but the
larger area just won't take on one side.

I've been working on this simple task for a lot longer than I should. I have
deleted & re-done the projected lines & traced over them with sketch lines a
bunch of times with no luck.
I already did the other side (symetrical part) without a problem (sometimes
I really miss Autocad - I tried to fix it there but don't think it would be
backward compatible.

If needed I can supply the IDW but not the parts & assembly. Not sure if the
file would
still help even if opened with updates defered.

Any ideas what could be wrong or how to fix?

Gary

[dan_inv09]

I always figured it was just me. I hadn't seen it in a while, maybe I learned to avoid it.

I will try, if I have time, to come up with a data set I can post where this problem is persistent. I have had some drawings where I avoid changing anything because I know when I open them I will have to redo the sketches (and it is not only with hatch/fills). Unfortunately mine are probably all unmigrated from a couple of releases ago.

If anyone else can produce something they can post so that Autodesk can get working on this, please do, especially if you have it in 2009.

Gary, I can't download (Mordac) so I'm just guessing. You could always try adding a part and using a section view. Do reference parts section/hatch? It may seem like a whole new can of worms but it might be better than having to redo your sketches all the time.

[Anonymous]

Dan,

As a workaround, I decided I'm just going to draw in a shape that
approximates the fill space & not use all the projected lines as before. I
can't add parts to make a section since the their are lots of IDWs created
form the IAM & IPN I am using to create the view & all would be affected by
a new "fill part" whether ref part or not.

I think it's the projected lines that are overlapping the fill borders that
are probably at the heart of the issue. Still, the new sketch lnes should
not be dissapearing.

Can someone from Autodesk lend us some insite maybe?

Gary

[JDMather]

>If needed I can supply the IDW...

Can you supply sample idw?

I assume you are not using For Construction Only lines.

[Anonymous]

JD,

I'm not using construction lines. I used the same lines on opposite (left)
side of view & it worked fine.

My sample IDW file "Section Fill problem.idw" is 11 MB & has been uploaded
to Dennis Jeffries FTP site ftp://ftp.interlancentral.com in my folder
"GCross"

I can't supply the parts & asy so you will have to defer updates upon
opening.

I think the problem also could be line ends not contraining together but
it's difficult to tell since all lines are same color & line thickness gets
in the way.

I appreciate you having a look. Thanks.

Gary




wrote in message news:5898355@discussion.autodesk.com...
>If needed I can supply the IDW...

Can you supply sample idw?

I assume you are not using For Construction Only lines.

[JDMather]

I found two openings in your sketch. Once these were closed with Coincident Constraints the boundary did not disappear and filled with hatch just fine.

[JDMather]

In the attached I spread out the open areas of the sketch boundary so that you can clearly see them. (That file seemed unusually large for the contents?)

[dan_inv09]

Yes, but does it stick?

The problem isn't that he does not know how to make a closed boundary for the fill, it is that when the view updates the fill goes away and when he edits the sketch there are openings. Once these were closed with Coincident Constraints it will hatch just fine until the next time the view updates.

(It might not have anything to do with the view updating, that just seemed to coincide with it when it was happening to me.)

[JDMather]

If the sketch is based on Projected Geometry that changes dramatically in such a way that unconstrained/undimensioned lines cross over (or the projected geometry disappears) I don't think the sketch would be stable. I would expect a fully constrained/dimensioned sketch not dependent on projected geometry to be stable. If Projected Geometry is used in the sketch I would be careful about exactly what geometry was used.

[dan_inv09]

Trust me, any changes to the projected geometry are all in Inventor's mind.

(I've been looking but I can't find an example. I'll have to dig a little further. I found one that always had a bunch of problems but it's decided to make a liar out of me.)

[Anonymous]

JD,

Yes, I discoved also that it's the end constraints that are the source of
the bad sketch problem.
And the file was huge for what it was. I deleted a bunch of views to get you
a more managable sample but maybe there's vestiges of them left somehow.

Any reliance on projected geometry (like radii) to constrain the sketch is
probably not a good idea so I just minimized what I used knowing that any
geometry changes to the part will just make all the projected geometry go
sick (pink) anyway.

What I need to do is turn off "show Line weight". I also colored my sketch
lines under Layers Standard/Sketch Geometry so I could see what I was
adding vrs what was already there.

I had to get it to work for a due date today. Next time I'll try all the
ideas you inspired.

Thanks,

Gary




wrote in message news:5898657@discussion.autodesk.com...
In the attached I spread out the open areas of the sketch boundary so that
you can clearly see them. (That file seemed unusually large for the
contents?)