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CORNICE MOULDING HELP


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This doesn't seem to achieve the required effect. Below is an image of essentially how this should be achieved. I thought maybe subtracting solids but this doesn't seem to work either

 

 

image.png

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I can’t quite tell from the image exactly what is happening there…can you post what you have so myself or someone else can resolve your issue?  There are probably a few techniques to facilitate this.

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Posted (edited)

Several ways

The easiest now is to extend both extrusions past the corner and in Top/Plan view use the Split(L) tool 2nd mode

& throw the cutoffs in the recycle bin.

image.png.888cda08e89dc834bad92da57a195cb2.png

 

Another way is to Select each cornice and in the 3d Modelling tool set Taper Face the end of it 22.5º - that's a more fun way.

 

Finally A simpler way altogether is to draw the a polygon in Top/Plan for the full run of the cornice.

Select this and the profile

Model>Extrude Along path.

Chances are - you will now need to Edit 2d of the EAP and move the profile to position.

 

Take a look @ Chain Extrude to create the dental molding and mitres all in one go.

 

 

Edited by bcd
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1 hour ago, bcd said:

 

Finally A simpler way altogether is to draw the a polygon in Top/Plan for the full run of the cornice.

Select this and the profile

Model>Extrude Along path.

Chances are - you will now need to Edit 2d of the EAP and move the profile to position.

 

bcd's suggestions are spot on, and actually, if you place the profile object right where it should go in 3d space in relation to the path object, no need to edit the profile...which by the way doesn't have to be a 2d object. 

 

The screenshot below is in wireframe so you can clearly see the profile and path objects.

Note the profile for the crown moulding is hooked directly on to the path object in the correct orientation....

 

Screenshot2024-05-27at6_22_49AM.thumb.png.a5fb0060c7e8bf1d6f98deb31145cba2.png

 

...and looking up from below you get this after selecting 'extrude along path'......crown moulding created in one move, mitered corners and all 🙂

 

Screenshot2024-05-27at6_24_17AM.thumb.png.05e5ce07b6fb5699cccb776910ca5018.png

 

 

 

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This fellow has a slightly different problem.  Granted a mitred joint can be done in many different ways, but this exterior moulding has those little pockets, which will affect how the actual joint looks.  Both sides of the mitre have to look alike.

 

It would be so nice if @InchSw3 would post the file, or just the moulding.

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Raining heavy here and I am bored, so I made a short tutorial on how I would create this type of cornice.  It may be of interest to anyone.  I did not do any editing to fine tune things, just the basics.

 

To be honest, it appears I am not the only one who is bored.  The usual suspects seem to be jumping all over any real 3D questions and appear to get really excited if it involves NURBS. 

 

 

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