Can I tangent two bodies at two points to each other ?

[jakubkfree]

I'm trying to make supports for 3d printing for a part I need to print.

It is an odd shape and I would want it to rest on a 'base' touching with two points (two points tangent?). How do I make the two touch (but not go into each other), especially if I need them to touch in two points (photo attached)?

In 3d printer slicers , there's an option to select a side of an object and it'll place it on that side touching the buildplate . That's sort of a thing I'd like to achieve here, but not sure how to do it. 

Or if I could create a plane that would be tangent to the edge and I could then create my base that would work for me too

[bwalker145 · Accepted solution]

Welcome to the pain that is trying to achieve a tangent connection in Fusion. It's a struggle.

In the past, I've been able to use the "Tangent Relationship" function under "Assemble" to get the parts to mate across two points. It's finicky & requires some playing around, but works *sometimes*.

I keep getting an error that doesn't make sense with your file, even when separating the contact surfaces. I'll keep messing with it.

[TheCADWhisperer · Accepted solution]

@jakubkfree 

Given that you are going to move this anyway, I would have:

1. Made the Base on one of the Origin Planes.

2. Convert the Bodies to Components, Ground the base.

3. Tangent Joint one location. Will probably need #4 at both locations for this geometry.

4. Model a spherical surface Component to the part and Tangent.

5. Joint the spherical surface Component to the Base.

[info_inamseo · Accepted solution]

Fusion 360 does not allow you to directly apply tangency between two separate bodies at multiple points simultaneously. Tangent constraints work between faces, not individual points, and Fusion treats each constraint independently. To work around this, you can use a Rigid Joint to align one point on each body and then apply a Tangent Relationship to a face for surface contact. If you need a second tangency point, you'll need to split the bodies into separate components so each point can be constrained individually. This approach simulates dual tangency by managing constraints through joints and component separation.