topic Re: Why cant I union these objects? in AutoCAD Forum

Why cant I union these objects?

Anonymous — Thu, 11 Jun 2015 10:12:59 GMT

Hi guys.

I have applied the dwg file. That is the back of my pc monitor and monitor stand and I want to union all the objects. However, I cant, and I dont know why.

The pink and the green object are in an union but separate ones and no matter what I do, I cant union them together.

I could make my life easier and just group them, but at this point I would like to learn about this problem so that I can solve it myself later on in the future.

Round corners are made with loft on guides, after region ofcourse.

If you need any more info, just let me know.

Thank you,

Antonio

Re: Why cant I union these objects?

parkr4st — Thu, 11 Jun 2015 10:52:10 GMT

F2 and post the union command and results

i.e.

This is what I get

Command: UNION

Select objects: Specify opposite corner: 2 found

Select objects:

At least 2 solids, surfaces, or coplanar regions must be selected.

what software and version i.e. autocad 2015

Re: Why cant I union these objects?

Anonymous — Thu, 11 Jun 2015 10:57:06 GMT

F2 on union command:

Command: _union
Select objects: 1 found
Select objects: 1 found, 2 total
Select objects:
At least 2 solids, surfaces, or coplanar regions must be selected.

Version AutoCad 2014.

I have tried a lot of things (as far as my knowledge goes) but with no results.

Re: Why cant I union these objects?

JDMather — Thu, 11 Jun 2015 11:05:05 GMT

When I run the List command I get Solids, Surface and Regions.

Try hiding the solids on a separate layer.

Use the Surfsculpt command to "stitch" together the surfaces and regions into solids.

Unhide the solids and try again.

or, if you just want to get it done - surfsculpt and window select that which you wish to solidify.

Post back if you need a step-by-step video.

Re: Why cant I union these objects?

Anonymous — Thu, 11 Jun 2015 13:57:14 GMT

I needed just that what you said will help - SURFSCULPT and window choose the objects that I want unioned, and now the object is in one piece.

Thank you for your help,

Antonio

Re: Why cant I union these objects?

Anonymous — Fri, 18 Dec 2020 18:33:26 GMT

Hi, kindly help on how I can use union to make the hollow surfaces on the dwg file have attached to be one solid, have tried to use, union and surfsculpt but no help. Kindly help.

Re: Why cant I union these objects?

Patchy — Fri, 18 Dec 2020 18:59:13 GMT

Hi, kindly help on how I can use union to make the hollow surfaces on the dwg file have attached to be one solid, have tried to use, union and surfsculpt but no help. Kindly help.

You attached a .jpg therefore no one here can make it a solid

Union command doesn't make 3d solid, it combines.

Re: Why cant I union these objects?

Anonymous — Mon, 21 Jun 2021 08:01:17 GMT

I tried above methods and couldn't solve it as well.

With union command the laptop run for one day without results.

Need to create one solid object for the stl file.

Could someone provide me guidance?

I am using autocad 2021, HP zbook with intell i9.

See attached example file

Thanks