Surfaces to Solid Using Projected Curves and Lofts

jack_biesiadecki

Hello, 

I am working on trying to make a part created with projected curves and lofts into a solid object. I have not been able to close 2 of the sides. Any help appreciated.



How do i make the backside solid?

bruce_williams

EXTRUDE the 'backside' curve as a surface, Symmetric, extending past the part
then use ENCLOSE

jack_biesiadecki

Thanks for the quick response and suggestion, however, in extrude mode I can not select any sections/surfaces/edges/outlines on the front to back planes. 

MichaelPascoe

@jack_benedetti If you link share your document, we can give you better instructions.

bruce_williams

Not sure what you mean.  If you share a public url we can help further.

Or maybe this picture shows what I think. The curve establishing what you call backside seems to be on or parallel to the bottom plane.  You should be able to extrude that curve to close out your part with a surface.

jack_biesiadecki

Link to my project

https://cad.onshape.com/documents/205ca9bc28bf534307447235/w/9622d075c4a4e7817c61f424/e/76057e55e05d334ee8668a69 

Thanks

jack_biesiadecki

duplicate port

bruce_williams

I copied your doc and created a solid part.  EXTRUDE & ENCLOSE

See the completed document here

jack_biesiadecki

Hi Bruce,

Link states that the resource does not exist or that I don't have permission to view it.
Thanks for taking the time to look at this. Is there anything you would do differently to make a similarly shaped part?

Jack 

bruce_williams

my bad - it is now public and you should be able to open.

bruce_williams

@jack_biesiadecki

please try again on the link

And you asked about any other ideas.  Your general approach is very good using projected curves, lofts, and then extrude & enclose.  Not sure of your intent but your curves are not smooth. You will want to work on your sketches, esp. splines.  You can use tangency at joining curves and try not to put more than 3 points in a splines (two is often enough).  You can do a lot with constraints and the spline handles.  The Forum has many threads on smooth curves/surfaces.  Here is one and a second one where @John_P_Desilets has some great tips for splines & lofts.