Please help me understand why my "enclose" doesn't work

peterd

In this document: https://cad.onshape.com/documents/36408c7b377cab39927a43c7/w/8152ee885a81f0f73e7b096b/e/613ef7aaa27430f3700442db

I have tried to define the curved top of a knob, by doing a spline sketch of a line, rotating it to define a surface, and then enclosing it and the face of the extrusion underneath to define the solid top of the knob.

However, the "enclose" step isn't happy and I don't really know why. Can you enclose from a surface, or do you have to thicken it first? I'm not quite sure what would happen if I thicken the curve.

MichaelPascoe

To get the enclose to work, it needs to be a totally "enclosed" selection of faces or planes.

But you can simplify your workflow by revolving your shape as a solid:

https://cad.onshape.com/documents/f6bba73642a31528ecab41f9/w/b36fa8de34545692a650c57b/e/9ca44d6be1e2d56c46b0a5ec?renderMode=0&uiState=66cf2dea0f9d0e6bf1b57446

MichaelPascoe

To get the enclose to work, it needs to be a totally "enclosed" selection of faces or planes.

But you can simplify your workflow by revolving your shape as a solid:

https://cad.onshape.com/documents/f6bba73642a31528ecab41f9/w/b36fa8de34545692a650c57b/e/9ca44d6be1e2d56c46b0a5ec?renderMode=0&uiState=66cf2dea0f9d0e6bf1b57446

peterd

https://forum.onshape.com/discussion/comment/106326#Comment_106326

Thanks - it was the adding of the two lines to make an enclosed shape in my sketch before I revolved it that I was missing, and why I couldn't do a solid rotate in the first place (which I tried).