How to create bounded surfaces from edges ?

mutharasu_lalitha_chockalingam

I have an extruded cylindrical surface (from a circle sketch). I want to create two other circular surfaces, at the ends of the cylindrical surface.

shanshan

andrew_troup

Another way, which is a slight variation on @shanshan's method: to sketch a radial line on a plane through the end of the cylinder (If you have a point which lies on that notional plane, eg the centre point of the circular edge, you can make a "line-point" construction plane, by picking that circular edge of the surface as a "line")

Pick the line and do a "Revolve/Surface", picking the cylindrical surface to define the "Revolve axis". You will get your capping planar surface.

I imagine a further way would be sweep the radial line (with a coincident constraint at the axis of the cylinder) using the edge as a circular path, to produce a planar surface, but I haven't actually tried it.

shanshan

joris_kofman

it does not seem that there is a tool for creating bounding surfaces per se. What you can always do is to create the surface that you want to close a hole and then trim it to fit using the split part feature. For this example it would work, but i am sure there are a bunch of scenarios where this would be hard to do.

andrew_troup

Another way, which is a slight variation on @shanshan's method: to sketch a radial line on a plane through the end of the cylinder (If you have a point which lies on that notional plane, eg the centre point of the circular edge, you can make a "line-point" construction plane, by picking that circular edge of the surface as a "line")

Pick the line and do a "Revolve/Surface", picking the cylindrical surface to define the "Revolve axis". You will get your capping planar surface.

I imagine a further way would be sweep the radial line (with a coincident constraint at the axis of the cylinder) using the edge as a circular path, to produce a planar surface, but I haven't actually tried it.

andrew_troup

@mutharasu_lalitha_chockalingam

OK, the revolve method works, very similar to what @shanshan demonstrated, but this is only useful for the cylindrical example you raised.

I was hoping the more general sweep method would also work, not just for cylindrical cases (which it does, as I imagined it would), but for arbitrary paths like a closed spline (which it appears not to, even if the resultant surface contour makes it non self-intersecting) 

This appears to be true whether the sweep path is coplanar with the sketch plane for the sweep profile,
or (as in shanshan's example) on a normal plane, with a pierce relation to the profile.

Loft with guide curves would work for 4-sided patches, but otherwise I think we need to kludge it with "Split Part" (producing a sacrificial trimming surface which we can then delete) or wait for "Split Face" which hopefully is not far away.

kevin_quigley

Am I missing something here? For this case you simply extrude a circle. No?

andrew_troup

My understanding is that the OP (who seems to be missing from the thread) wants a planar surface with circular boundary to cap each end of his cylindrical extruded surface