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Project angled edge onto plane (like casting shadow)

donaldstjohn
Explorer

Project angled edge onto plane (like casting shadow)

donaldstjohn
Explorer
Explorer

Hello.  I am very new to Fusion, and don't know the jargon well enough, so forgive my ignorance as I learn.  I will try to describe in simple geometric terms.

Imagine a cylinder whose base is the XY plane, the central axis of which is in the Z direction.  Slice off the top of the cylinder at a 20 degree angle.  I want to project that top angled edge onto the XY plane, along the Z axis, at a 15 degree angle as if I were shining a light straight down the Z axis and casting a shadow on the XY plane.  The resultant shadow should be eliptical.

I was able to create the cylinder and sloped top face, but am stuck on how to project a shadow.  It's supposed to represent a draft angle so I can know what the bottom outside shape will look like.  I attached my cylinder drawing, and a crude sketch of what I'm talking about.  Greatly appreciate any help.

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davebYYPCU
Consultant
Consultant

Can get that with the Surface > Sweep Tool.

Sweep the top ellipse profile, down the Axial Line, with taper angle (15).

Extract the projected ellipse with Project > Intersect in a new sketch.

 

desdb.PNG

 

Might help....

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HughesTooling
Consultant
Consultant

You might be able to use the draft tool, there's an option for parting line draft.

Select like this.

image.png

Then add draft.

image.png

Mark Hughes
Owner, Hughes Tooling
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