Trouble Joining Chamfers Along A Curve and Straight Edge

Trouble Joining Chamfers Along A Curve and Straight Edge

Anonymous
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Message 1 of 10

Trouble Joining Chamfers Along A Curve and Straight Edge

Anonymous
Not applicable
Hi,

 

I'm trying to add some chamfers to a part I'm working on. When I apply the chamfer, it continues through and beyond where I want it to go, instead of joining with the curved tab. Essentially, I want the chamfer to be on only the outside perimeter of the piece. 

 

Any idea how to do this? Thanks.

 

Screen Shot 2020-08-16 at 7.52.45 AM.png

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Accepted solutions (1)
1,488 Views
9 Replies
Replies (9)
Message 2 of 10

TrippyLighting
Consultant
Consultant

You should start with properly constraining and dimensioning sketches. Then we can talk about chamfers.
As a beginner you should turn the timeline on.


EESignature

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Message 3 of 10

Anonymous
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I see. Thank you for the reply. Unfortunately, I tend to learn as I go and don't always do things properly. I'll look into the constraints and dimensions that you mentioned. 

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Message 4 of 10

TheCADWhisperer
Consultant
Consultant
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Message 5 of 10

Anonymous
Not applicable

Thanks for the link and I appreciate the help. For the most part I've defined the sketch pretty well now. But I'm not able to get the spline to be defined. I've dimensioned it but it still stays blue. 

 

Screen Shot 2020-08-16 at 2.50.43 PM.png

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Message 6 of 10

TheCADWhisperer
Consultant
Consultant

Multiple issues here:

1. No new file Attached.

2. Imagine one of these points was your house and someone asked for your address to locate the house.  Where is  you house? An undefined location in space.

3. As a beginner (and generally for pros too) I would recommend that you use tangent arcs rather than splines for geometry like this.  (With splines - we also have to define weighted handles at the point locations.)

 

Point Locations.PNG

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Message 7 of 10

Anonymous
Not applicable

I apologize for not attaching the updated file.

 

Do I need to define the individual green handles or just each black point? I'm more familiar with bezier curves and the like as far as drawing is concerned, so that's why I gravitated to the spline. This drawing/design is rather fluid so I like the ability to adjust the spline as needed.

 

Thanks again for your responses.

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Message 8 of 10

TrippyLighting
Consultant
Consultant
Accepted solution

I gave this spline tangent handle a horizontal constraint so the transition between the two halves is tangent:

 

Screen Shot 2020-08-16 at 3.51.16 PM.png

 

Then I did the same for this spline, so the geometry of the handle flows into the frame tangent to top and bottom surface:

Screen Shot 2020-08-16 at 3.53.06 PM.png

 

Then the chamfer works:

 

Screen Shot 2020-08-16 at 3.57.46 PM.png

 


EESignature

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Message 9 of 10

TheCADWhisperer
Consultant
Consultant

I noticed that you mirrored a lot of geometry.

I almost never do this, if I want symmetry, I add Symmetric constraint.

Mirror results in, for example, two lines where a single line will suffice.  KISS principle applies here.

With single spline - I don't need to define the handle weights and angles (but of course that can be done if desired/needed).

(See Attached)

I layout the spline points and then sketch the spline snapping to point layout.

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Message 10 of 10

Anonymous
Not applicable

Wow, thanks for doing that.

 

Yes, I was mirroring most things. I'll give the symmetry constraint a shot and also try out the spline method you've outlined. We'll see if I can reproduce what you've done.

 

Anyway, I have a youtube channel myself (woodworking). If you ever need tips on the topic, I would be happy to help where I can!

 

-John

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