topic Re: Extrude only edges of polyline not full solid in AutoCAD Forum

Extrude only edges of polyline not full solid

Anonymous — Tue, 14 Apr 2020 03:00:11 GMT

I did a special shape with arcs and lines, I then join them to make one polyline which worked and now I'm trying to extrude it so that I can have a 3d solid of that shape but it only extrude the edges, the solid is empty inside. I made sure that every arc and line were connected from endpoint to endpoint and I checked again to make sure there were so mistake so I don't understand why it's not working. If someone could help me please, I've been trying to figure it out for a few days now...

Re: Extrude only edges of polyline not full solid

sophia_lee — Tue, 14 Apr 2020 03:20:47 GMT

Hi @Anonymous,

Have you used REGION or BOUNDARY command to create a new shape and extrude it?

If above is not working, could you post the sample drawing here?

Thank you,

Please 'Accept as Solution' if this helps.

Re: Extrude only edges of polyline not full solid

cynthia.claire.tan — Tue, 14 Apr 2020 03:55:06 GMT

Hello @Anonymous ,

Welcome to AutoCAD Forum! I understand you are trying to extrude your model. There are a few suggestions in this other forum post which may help: https://forums.autodesk.com/t5/autocad-forum/polyline-extruded-is-quot-empty-quot/td-p/7583808

If none of this worked, let me know. If you could provide the drawing file that would be helpful. Hope this helps! 🙂

Re: Extrude only edges of polyline not full solid

Anonymous — Tue, 14 Apr 2020 03:48:40 GMT

Hi, when I click on your link it goes on my question, but here's the drawing in Autocad 2019

Re: Extrude only edges of polyline not full solid

cynthia.claire.tan — Tue, 14 Apr 2020 03:50:51 GMT

Hi @Anonymous , sorry about that. Here's the correct link: https://forums.autodesk.com/t5/autocad-forum/polyline-extruded-is-quot-empty-quot/td-p/7583808 🙂

Re: Extrude only edges of polyline not full solid

vinodkl — Tue, 14 Apr 2020 04:59:26 GMT

Hi,

Try to flatten the object using the command "FLATTEN" and then join the object to make it close. Now use the command "EXTRUDE" or "PRESSPULL"

Re: Extrude only edges of polyline not full solid

Anonymous — Tue, 14 Apr 2020 17:35:18 GMT

Hi Cynthia, I tried all the solutions in the link you sent but none are working. It's weird because when I do boundary a duplicate of my drawing appear but if I do enter, the duplicate disappears.

Re: Extrude only edges of polyline not full solid

Anonymous — Tue, 14 Apr 2020 17:47:40 GMT

THANK YOU SO MUCH IT WORKED OMG. Once I flatten my drawing on Top view it removed the part that wasn't flatten so I redid it, I join and I extruded and it worked! You saved me a lot of times. Really appreciate. 😄

Re: Extrude only edges of polyline not full solid

adamfahmi2528 — Thu, 16 Oct 2025 12:56:24 GMT

hi. i having same problem with my drawing and tried your method but seems still problem.. could you tell me step by step.. thank you

Re: Extrude only edges of polyline not full solid

vinodkl — Thu, 16 Oct 2025 14:44:47 GMT

Hello @adamfahmi2528

Please share the drawing, so I can check it from my end.