Making loft shape

song_jaybi

Dear Onshaper,

https://cad.onshape.com/documents/69a0c2f4ded21508bfc90699/w/652b9d367f030d3d8da538df/e/f889a33dfcb60c6aa22c1f54

 I want to make solid or surface model. but I have failed the loft function. 
Could you have any ideas? 

brucebartlett

I tried it this way.

Profiles. From back face profile to vertex at the centre point on the front arc. 

Guides. Changed to splines, point to point rather a combination of lines and arcs. I also mirrored the spline on sketch Edge???2 so there are 2 splines symmetrical. Selected the 3 splines as guides and pushed the loft out to shape.

https://cad.onshape.com/documents/586f334e7a21aa10e5485cfa/w/ca92af99d8e9e1543ef4af4f/e/be08be2a2a9892af295d5a92

his 

song_jaybi

Thank you. Bruce.

Hmm, couldn't we use the line segments not spline as Guide?

Narayan_K

@ song_jaybi ,Now Onshape will not accept more than one entities in single guide curve.so if one guide curve contains more than one sketch entities will going to fail.You can raise a improvement request for this

philip_thomas

This is a great example of how posting a link gets you all the help you could ever want!
I tried this as well and Bruce's solution is very good.
My contribution here is to state that you absolutely can use multiple sketch entities as a guide curve - the secret is to put them all in a single sketch and then select the sketch as the guide.

I love Onshape

brucebartlett

Thanks @philip_thomas, nice tip on the select sketch for multiple guide curves. I hadn't discovered that one although sure I'd had this work in the past.

I have just redone the model to see this work but unfortunately, it doesn't generate after selecting a combination of sketch 2 or 3 on the bottom plane. Any idea's on this. 

 

philip_thomas

@brucebartlett Bruce - no sure exactly what you were struggling with, but here is the one i made

https://cad.onshape.com/documents/586fb81979772510f11d29a3/w/2f65ee13843591ca2d3cb09e/e/69051890f39a5bfdaf18f271