[Bug] With hole in pipe ;-)

[TrippyLighting]

I had created this model because sometimes when working with Fusion 360 I feel the need to smoke something 😉

One of the last few operations in the timeline is extrude-cutting a hole into the head of the pipe.

The really odd thing is that this creates a body that is invisible in the viewport, but only visible in the browser.

[jeff_strater]

Very odd, my friend. I will look at it tomorrow, between the parade and turkey...

Happy Thanksgiving!

Jeff

[etfrench]

I have several briar pipe bowl blanks that are threaded.  I can send you one if you want to build the pipe.

[mroek · Accepted solution]

I think it's a sliver body. Try moving plane 6 (where you have the sketch you extrude from) a tiny bit upward (say from 22.931 to 23 mm), and the additional body is no longer created. You can also make the extrude cut to go both ways and achieve the same thing.

[TrippyLighting]

@mroek You are correct! This crossed my mind when I picked the plane location , which is the start point of the spline I revolved to get the shape for the pipe head. I dismissed my own concerns because I was convinced that the spline I had sketched would not hav any convexity. I was wrong!

@etfrench I appreciate the offer. I don't smoke myself and don't have the tools, or skills do do this kind of work. I simply find pleasure to model and render simple objects like these.

[mroek]

@TrippyLighting: A side question: In your image, you seem to use a curvature comb analysis on the sketched spline curve. How did you do that? The curvature comb tool doesn't let me select sketch elements for analysis. Did you extrude the curve to a surface body, then analyze the edge and just hid the surface body? I guess you did. Sneaky...  🙂

[TrippyLighting]

You have to edit the sketch, select the spline, right-click and select "Toggle curvature comb" (or so).

[mroek]

Aha! That option had I never noticed before. Thanks!

[jeff_strater · Accepted solution]

@mroek has got it.  This is a very tiny body.  See the screencast below.  The reason it doesn't display unless you do a "Find in Window" is that Fusion optimizes the display:  If an entity is smaller than one pixel, it does not even get drawn.  But, you can find it.  And, @mroek's solution is probably the best way to fix it, as well.

Jeff