How to make a odd-shaped "bowl" or how to make a concave face on an odd shape

[alec.w.penland]

Looking to turn my object into the attached picture. I can't figure out how to smoothly loft into the face. It's supposed to be .83mm deep at it's deepest point.

I am waiting til after the loft to fillet all the edges.

Whether there are flat points in the middle or not is unknown, just looking to make it relative.

Download Link:

https://a360.co/2J3bZMb

[g-andresen]

Hi,

just to show the principle, the example was created in < 5 minutes.

concave face

An optimization can be carried out e.g. by a different division of the areas.

regards

günther

[lichtzeichenanlage]

I like this method. The only thing I would differently is to Modify -> Replace Face instead of the split body. But that's just personal taste I guess. 

[chrisplyler]

Here is my method. I used a couple of lines to define the depression, but you can do it with whatever you think will create the shape that you want. I apologize for the length. I should have been able to do it in half the time, but I had a few short distractions in my office while making the recording.

[chrisplyler · Accepted solution]

For example, you could instead use an offset for the Patch's inner rail. It might be a little more uniform this way.

[g-andresen]

Hi Alec,

here is the button with concave face:
concave face (sculpted)

You can still optimize the shape by activating and editing the sculpting face.

guenther

[therealsamchaney]

Guenther, would it be possible to do this parametrically? Doing concave using forms like this could be very useful for me if I could have a parameter for the concave depth that I could change in the Parameters menu.

Thanks for the solution, BTW it seems that I see you helping on every forum post I see around here.

Thanks!
-Alterius

[TrippyLighting]

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@therealsamchaney wrote:

Guenther, would it be possible to do this parametrically? 

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No. T-Splines (forms)  at this time are purely direct modeled objects.