topic Re: Hatching two objects creates line in between in AutoCAD Forum

Hatching two objects creates line in between

atuckerJKU9U — Tue, 26 Sep 2023 20:30:44 GMT

Can anybody tell me what is causing the hatch on the left in the attached drawing to glitch and show a line between the two objects? If cut a little piece out of the circle then close it so it becomes a polyline, it doesn't do it anymore. I have plenty of workarounds, I'd just like to know why it is happening so I can avoid the situation.

Re: Hatching two objects creates line in between

atuckerJKU9U — Tue, 26 Sep 2023 20:34:36 GMT

It's something wrong with that top polyline. Here's the same polyline interacting the same way with another one. What is wrong with it?

Re: Hatching two objects creates line in between

paullimapa — Tue, 26 Sep 2023 21:38:43 GMT

After applying FLATTEN command:

Re: Hatching two objects creates line in between

atuckerJKU9U — Tue, 26 Sep 2023 21:44:06 GMT

Hmm, still doing it after using flatten for me. What made you think that would help when neither of the objects are away from z=0 or 3d? And why did it work for you and not me...

Re: Hatching two objects creates line in between

paullimapa — Tue, 26 Sep 2023 21:46:46 GMT

Typically when odd things happen with objects I would run the FLATTEN command.

I'm not sure why that didn't work for you though.

Did you open the dwg I posted to see if the Circle & Pline objects on the far right still works for you?

If so, perhaps copy & paste those into your dwg & see if that still works.

Re: Hatching two objects creates line in between

atuckerJKU9U — Tue, 26 Sep 2023 21:52:06 GMT

We do the same thing here. I got a routine called superflatten just because so much stuff we get from engineers has z coordinates all over the place. Anyway, the file you sent back does work for me as it did for you, but I noticed that something happened to the polyline so that the one you were hatching is not identical to the original. Mine is the pink one, yours is the yellow one. I think that's why they're acting different from each other, not from being flattened.

Re: Hatching two objects creates line in between

paullimapa — Tue, 26 Sep 2023 22:17:45 GMT

The Flatten command could have made adjustments to that PLINE object.

But I also noticed something else that's odd.

When I open your dwg in AutoCAD 2020 the Hatch Preview still shows that line.

But once I complete the Hatch command the line disappears.

This odd self correcting behavior does not occur in 2021, 2022, 2023 or 2024.

But in all the other versions I would run the FLATTEN command actually on just the PLINE object and that resolved the issue.