Looking for advice on best practices for extending a compound curve from a body

[Anonymous]

Hi everyone,

I was hoping to find some advice or direction on how to tackle extending a body into a more complex shape.  I am trying to remodel a plastic door handle from an old vehicle so I can 3D print a replacement.  

Here are a few images of the curve I am stuck on

I have tried numerous times to extend the top and allow for this lip/curve that also needs sever fillets, but each attempt ends with what I believe is a broken or unclean model that will not allow for the finishing work that needs to be done. 

How would you approach this?

[etfrench]

Create a Plane Along Path using the current rim as the path.  Draw the profile of the lip on a sketch created on the plane.  Use the Sweep command to complete the lip.

[Anonymous]

If I am understanding you correctly, would this take into account the A-symmetrical nature of the rim?    (First picture for reference)

[etfrench]

It will, but you'll need to modify your existing flat rim to match.  The easy way to do this is with a sketch on one of the narrow ends. Draw the desired profile.  Use Extrude|Cut to remove the excess. Now you can use the sweep routine to complete the model.

p.s. You may need to remove the fillets in order to get the profile right.  If you can't get it to work, attach your file to the thread (File|Export|Archive files *.f3d).

[davebYYPCU]

You would need to shape the box to copy the actual the rim shape

before the sweep, that would have to use a Path and Guide Rail.

Might help....