Subraction

How do  I subtract one part from another in the document part?

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Source http://help.solidworks.com/2016/French/SolidWorks/sldworks/HIDD_DVE_FEAT_COMBINE_BODIES.htm

 

PropertyManager Combiner

In the Combine PropertyManager , you specify the bodies that you want to add, subtract, or overlap in a multi-body part.

To open this PropertyManager :

In a multi-body part, click Combine tool_Combine_Features.gif (Functions toolbar) or click Insert > Functions > Combine . 

You can only combine bodies contained in a multi-body file. You can't combine two separate pieces. However, you can create a multibody part by using the Insert Part option to place one part in the other part file. You can then apply the Combine option on the multibody part.

Type of operation

AddCombines the volumes of all selected bodies to create a single body.
Combine_bodies_add1.gif
SubtractionRemoves overlapping material from the selected main body.
Combine_bodies_subtract1.gif
CombineRemoves all material except the overlapping material.
Combine_bodies_common1.gif

Body to combine

Available when Operation Type is set to Add or Common.

PM_solid_bodies_to_affect.gifSolid bodiesLists the bodies you have selected to combine. You can select the bodies in the graphics area or in the Dimensional FM_solid_bodies.gif Bodies folder in the FeatureManager design tree.  Click Show Preview for a preview of the feature.

Main Body

Available when Operation Type is set to Subtract.

PM_solid_bodies_to_affect.gifVolumeLists the components that you have selected to keep. You can select the bodies in the graphics area or in the Dimensional FM_solid_bodies.gif Bodies folder in the FeatureManager design tree.

Body to subtract

Available when Operation Type is set to Subtract.

PM_solid_bodies_to_affect.gifSolid bodiesLists the bodies from which you want to subtract the material. You can select the bodies in the graphics area or in the Dimensional FM_solid_bodies.gif Bodies folder in the FeatureManager design tree.  Click Show Preview for a preview of the feature.
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as said you need 2 bodies

The combined subtract function

you select the room(s) to keep 

you select the body to combine and subtract

thus

and you end up with that he once select the bodies to keep

 

if you look at the number of bodies has changed 175 to the liau of 2

magic

@+ ;-)

 

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