can I do an offset from a 3d sculpted surface?

[tkms002]

I have copied a carved top guitar model from thingiverse and I want to create and offset into the guitar that is parallel to the top compound curved surface.

Is that possible?

[JHRendon]

Could you attach the 3d model or a picture? 

[laughingcreek]

is it a .stl or a nurbs surface?  if it's from thing verse chances are it's a .stl (mesh) file.  probably best to do it with mesh mixer.   fusion isn't the right tool for editing mesh files.

[tkms002]

it is a fusion 360 file.  attacjed is the model.

I want to create a surface 3/16 inch down from the top of the guitar so I can create a seperate body for the top of the guitar.  

[laughingcreek]

see last 3 features in timeline of attached

I suspect your going to end up wanting to go about your build a little different than this.

[tkms002]

ok  why do you say that??

Thanks

[tkms002]

How did you do that?

[tkms002]

I can create the offset face but how do you split the bodies after that?  I see in your timeline there is a surface untrim.

How do you do that?

Thanks

[laughingcreek]

forum not letting me post pics right now.  under surfaces-modify tab there is an untrim command

[tkms002]

OK  I dont know how I missed that.  Now, I am loosing my mind.  I thought I knew how to create the offset body but I see I was just modifying yours.  How do I create the offset body?

I tried offset face but that does not leave the original.

[TrippyLighting]

I've not looked at @laughingcreek s file but I believe You need to change into the Surface tab to offset an individual surface.

[tkms002]

Great  Thanks

[tkms002]

uugh  When I try to do the untrim I get an error.  Failed to perform boolean operation.

Why cant I do the untrim?

[tkms002]

sorry  I think I figured out that I was using the wrong BODY.

In the attached picture, what is the difference between Body11(1) under Bodies(which I can untrim) and

top offset boddy(2) under Bodies under 3d sculpted solid body:1 (which I get the untrim error on)?

[tkms002]

ops forgot the pic

[tkms002]

anybody know what the difference between those 2 bodies is?  They look like the same when you turn them on in fusion.

[laughingcreek]

the pic, the latest model you posted, and the description of the bodies your asking about don't match up, so it's hard to answer.

also noticed that the original t-spline surface used to form the top of the guitar is still present in the model, you can probably just offset that with out having to worry about untrimming.