Non coplanar parts

The two long legs are non coplanar but want them to be. How do I include 2017 version model attachment?

Sharing the model will help us help you.

Drag the .skp file into a reply here.

Hi Dave,

I am including a file containing a portion of the model I am trying to create. Maybe it is impossible to do what I am trying to do?
I think you have helped in the past and as always I greatly appreciate your help!


rect2.skp (82.5 KB)

Hi. Do you mean you want each of the rectilniear faces to be coplanar within itself? Move to a view like this. Choose move tool and click on point A. Press the UP arrow key to lock into the blue direction. Move “A” up while moving your cursor to snap on point B. You can then erase the diagonal edges if you want.

If you want them both to be co-planar to one another you are going to have to adjust the edges C-B-D and other edges to be on the plane–which seems like you might as well redraw in such a case.

Hi Jerry,

I’m sorry but I don’t understand what you want to make coplanar with what. Might be easier if you share the entire model. Maybe @pbacot already has you sorted, though.

Hi Dave,

Here is a more completed version (except for the tabs) of what I am trying to do.
It is a cover for a baseboard heating unit with a nonstandard joining angle.
One component is the vertical font face and the second component is the top part. These are fixed and cannot be changed. Then I try to connect the two components with lines between but they do not form faces.
I do not really care if the joining surfaces are coplanar but was hoping they would be. Is that what causes them not to act as facial section?


(Attachment coupled.skb is missing)

Not sure what you mean by “act as a facial section” but the edges must be planar to support a face.

Seeing exactly what you are trying to do would help sort that out. Might be that your model can be fixed or it might be easier to redraw the parts using a different method.

Dave, Did you receive the skp attachment I included?


No. In your previous post it looks like you tried to upload the backup .skb file but it failed.


I received an error message saying the skp file did not go through? It contained some components. Is that a problem?


According towhat shows in that post you tried to upload the .skb file not the .skp file.


I chose the wrong file.

coupled.skp (98.6 KB)

This one uploaded. I’ll look.

I’m still not understanding exactly what you are trying to do but the edges surrounding the openings are not coplanar so without triangulating you can’t have faces in those areas.

You could move corners to get the edges to be coplanar but since I’m still not seeing how this is to be used, I don’t know which points need to be moved.

This is probably not what you need but I pulled guidelines off the edges at the tops of the openings.

Then I used the Move tool to move that point near the middle that intersection and traced edges around the openings to get the faces.


Here is a picture of the baseboard connection I am trying to cover with this project. You can see how I chose the top and face components. Then positioned them as they need to be and connected them with connecting lines. I guessed the connecting sections might not be coplanar even if the two components were perfect.:confused:

There are prebuilt covers for certain standard angles, but our windows are not standard. Earlier I had modeled covers after these standard covers, but thought these might be better.


I’m not seeing pictures.

Forgot to include photo. Duh.

So you just want to cover the joint between the two baseboard heaters?

I just scrounged up a baseboard heater from the 3D Warehouse for this example. I drew a simplified cross section of the heater and a path along the edges of the heater. Then I used Follow, deleted the unneeded faces leaving the skin for the front and top surfaces.

You could trim the top part off if you need to.

I don’t think you could make this out of one piece of tin if that’s what you are thinking. You could make it from two pieces that would look something like this.


Yup. I should have sent the picture sooner. :slightly_frowning_face:Hope the project makes more sense now.
I didn’t know you could use the move icon to move a point like that.


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You never cease to amaze me!