Create a form from a sketch?

[Anonymous]

Hi i try do make this case.

as you can see a normal extrusion and rounding will not work.

but my frist idea was do frist idea was to extrude, and make form both sides a spline and cut the body

but this create this 4 areas on the top, which is more then bad and no smooth surface.

so this dont work well,

so because i have the exact dimension of the part, lets form it, or sculpt it, but i cancelt it, because i found no way to get this exact shape with the dimension...

is there a way?

thats my problem!

[TrippyLighting]

This can be lofted without T-Splines but ether way, this is a relatively challenging shape not the prettiest thing I've ever done so let's call it functional:

I'll see if I can get a T-Spline version going next.

[Anonymous]

Hello, did you use the frist body which i made in form mode and used extrusion?

what is the workflow to do this?

the main problem, which i dont like is when i use the free form mode, that its not exactly in size

[TrippyLighting]

I had the design file attached to my last post and when you go through the timeline you'll see exactly how this was created.

Dimensional precision in exterior surfaces of this object is pretty irrelevant. If you get within +-0.2mm of the shape that is plenty precise. That can be done with a T-Spline. It would look to me that the only precise fit needs to be the opening for the display and that needs to be a flat shape. And it is 😉

I created a new spline with fewer spline points and slightly better curvature and following the canvas with what I thought was "Precise" You can see that the two spline don't perfectly agree.

The photo  includes lens distortion. So the image in the canvas is not a precise reflection of the actual object.

So in essence for the exterior surfaces you are quire OK modeling that with T-Splines.

In the interior, where you have to interface with mechanical and electronic components you do need that dimensional precision. For that interface geometry you would indeed use the solid modeling tools in Fusion 360.