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jongor

using fillet on a complex solid

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jongor

I'm trying to fillet the edge of a 3d solid guitar body and can't seem to make it happen.

 

Any help, suggestions would be appreciated.

 

Please see attached file.P Bass - Copy.dwg

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ReMark

How did you construct the outline of the guitar body in the first place?

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ReMark

GuitarBodyFillet.jpg

You did not specify what radius you wanted on the fillet. I made a guess.

 

Did you create the guitar body profile using a series of short line segments?

Edited by ReMark

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JD Mather

This is not a complex solid - it is a simple solid that could be simplified a lot more.

Your sides are hundreds of planar faces. You should use tangent continuous curved to model something like this.

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jongor

Complex to me...:)

 

I used spline to create it and then converted that to a pline.

 

Not sure what you mean by "tangent continuous", but I'll look into that.

 

1/2" radius. How'd you do that Remark?

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JD Mather
Complex to me...:)

 

I used spline to create it and then converted that to a pline.

 

...

 

Why? You should have used the spline. Can you attach file with your original spline here?

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ReMark

I created a edge profile and extruded it around the path represented by your profile. I filled in the remainder of the body by offsetting the path 1/16" and extruding it. Finally, I unioned the two solids.

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ReMark

GuitarBodyFillet2.PNG

Half inch radius applied.

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jongor

Tried this by exploding the 3dsolid and got a region, when trying to extrude a quarter-circle along that region I get "Cannot extrude along this path."

 

I created a edge profile and extruded it around the path represented by your profile. I filled in the remainder of the body by offsetting the path 1/16" and extruding it. Finally, I unioned the two solids.

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ReMark

I exploded the region and used the PEDIT command to join all 400+ line segments/etc. which resulted in a closed polyline. That's what I used as my path.

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ReMark

GuitarBodyFillet3.jpg

Your guitar body profile (as path) and my edge profile shown circled in red.

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ReMark

GuitarBodyFillet4.jpg

After extruding my profile.

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ReMark

GuitarBodyFillet5.PNG

The interior "filler". Then all you have to do is union the two solids together.

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jongor

You're the man!

 

thanks

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ReMark

No, I'm a machine. Next time follow JDM's advice and you'll have a much easier time of it.

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jongor

I'm back at trying to do this, this time on a different body profile.

 

Started with a spline this time and could get either method to work; extruding a profile along the edge or using the Filletedge 3d command.

 

Using v.2014 now.

 

j body.dwg

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ReMark

Your profile is at fault. As you try to sweep or extrude it around the path it folds back on itself.

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jongor

Thanks, I'll check it...

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ReMark

I can extrude the guitar body but I can't fillet the edges completely. Odd.

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JD Mather

Your spline is a mess.

Forget about using splines - use tangent continuous arcs.

 

Running a curvature analysis on your spline in another program shows many rough locations, but one in particular (at location of red arrow) (this one is difficult to see in AutoCAD - zoom way in at red circle in attached).j body_jd.dwg

 

In general when creating a spline you want to use as few points as possible and let the software do the interpolation between points. It is a common misconception that more points = better curve.

 

Also - I recommend that you work with the origin (0,0,0) at the approximate center of area of your geometry (if it were a symmetrical part - I would have the origin dead center).

 

Curvature Analysis.jpg

Edited by JD Mather

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