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Can't Union two 3d objects

damon_krach
Community Visitor

Can't Union two 3d objects

damon_krach
Community Visitor
Community Visitor

Hello.  Im working on a personal project and am relatively new to this software.  I recently completed the Penn Foster online program for drafting with AutoCAD.  Anyways, Im trying to design a hoop with another hoop, in 3D, and cant get my 2 "rings" to union. It keeps saying "at least 2 solids, surfaces or coplanar regions must be selected".  ultimately Im trying to add ten of the small rings around the large ring.  Any help is appreciated.  Thanks. see attachment.

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TheCADnoob
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one of them is not a solid. 

 

TheCADnoob_1-1692740232404.png

 

Also The rings don't appear to be connecting  [corrected by @j.palmeL29YX Thanks for the heads up!]

 

TheCADnoob_0-1692740129420.png

 

 

I exploded the larger ring and then extruded the top surface down and moved the smaller object closer and was able to union 

TheCADnoob_2-1692740434875.png

 

CADnoob

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j.palmeL29YX
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@TheCADnoob wrote:

 

The rings don't appear to be connecting so they cant be unionid


 

@TheCADnoob

off topic, FYI only 

 

To union 3DSolids it is not necessary that they touch (or overlap) each other. Also two separate solids can be unioned to one solid (with two separate volumina).

Sometimes this happens unintentionally (e.g. after a subtract command). Then you can (if you want) split this solid with several volumina into separate solids using the solidedit->Body->seParate command. To do that the volumina must not neither touch nor overlap each other. 

 

 

 

@damon_krach 

The short answer why you can not union the objects (that does not seem to make much sense to me anyway?) is given above, the large object is not a solid. 

And as it is modelled at the moment it is not clear how it should look (we only could guess). Show us a (2D-)sketch what you want to achieve and we can help you to create the 3DSolid model. 

 

Jürgen Palme
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