Transition between lofts

[ruben_van_lerberghe]

Hello everybody,

For the crest rail of my chair model, I can't seem to get a smooth transition between 2 operations. There is a loft on a plane between 3 points( Loft 1) , and then a surface loft between 3 faces. And in between them a small loft (loft 13) to be able to create the 3 way joint.

I know there must be a way to get a smooth transition but have been trying to the best of my abilities ( which are very limited in fusion) 

There are sketches that are not utilised at the moment, so it's a bit of a messy model.. 

Help would be much appreciated.

Model is attached.

Kind regards,

Ruben

[shahriarsifat1802164]

Hi,
Do you want to smooth these edges?
Thank you.

[ruben_van_lerberghe]

Yes,

There is a kink between the different operations. More apparent in the actual model..

[TrippyLighting]

There are two obvious (to me) reasons that there is a kink. 

1. The rail you are using is not perpendicular to the profile you are lofting

2. The loft profile originates from a body which is cone shaped

The "Continuity" setting in the loft dialogue is ignored because it cannot be satisfied based on the input geometry.

As a remedy, you can trim out the area with the kink and create a loft without rail and use the continuity setting on both profiles.  

I would recommend, however, that you start this again from scratch and build a model using proper techniques. Right now this is quite a hack.

[laughingcreek]

every thing tripp said.

except the continuity on profile 2 part.  that's happening b/c you selected a sketch profile instead of the model face.

if you select the face instead (long left mouse click)-

you get these options instead-

selecting tangent here looks better, but can still be much improved with trippy's suggestions.

keeping  a model neat and organized is as much of a skill as designed a chair is.  You'll thank yourself for a well organized model when you come back in 2 years to make a "simple" change.

[ruben_van_lerberghe]

Thanks you @laughingcreek  and @TrippyLighting . When you say proper techniques, can you tell me where I should learn them ( by myself) and which they are that are lacking. I realise I need to build a better foundation but don't really know where to go.

[ruben_van_lerberghe]

No recommandations on where to get better at this type of modelling before I 'accept solution' ? 

Thank You

Ruben

[laughingcreek]

Sorry, I don't keep up with tutorials.  I've never seen anything that talks about everything all in one place.  even if it existed, it would probably take a few weeks to get through.

Some of the things you need to learn are fairly universal concepts.  The math behind lofting is pretty much the same across different programs.  in that regard any tutorials on surfacing would be good.  In the distant past I remember seeing some for Alias and for solid works that were pretty good.

Some of the things are fusion specific, but understanding what you need there will be easier after you have a general understanding of how lofts work.

[TrippyLighting · Accepted solution]

I agree with @laughingcreek that there is not a good single source for this. the tool is used for so many different things and in so many different scenarios that this would not make much sense either.

Below is a list of good sources I have sent to some of my tutoring students.

Those show some good techniques. Don't be fooled by the Class A terminology too often used by Autodesk Employees. It is dishonest marketing hogwash.  Fusion 360 is NOT a Class A modeling software and does not need to be either! 

Autodesk Alias Theory Builders

Complex Topology and Class-A Surface Modeling with Fusion 360

Product Surfacing with T-Splines and Parametric Solid Modeling Tools

Fusion Academy Refresher - Surface Modeling Under the Hood

Horizon modeling technique

Handlebar 3D

Autodesk Alias (and other software) tutorials.

Good to pick up general techniques.

Start with the phone series.

http://handlebar3d.com/

[ruben_van_lerberghe]

Thanks very much