Hi Forum. Trying to figure out why if I add an additional taper section to this cylinder ( select smaller face>extrude>tapered>distance 4mm) I end up with face without the taper visible unlike the previous taper on same cylinder. I can make an identical cylinder without incident without the bearing so I'm guessing it has to do with interplay.

Sven

Hi Sven,

Perhaps I'm wrong, but, when I open your file, the cylinder is a solid but seems having missing part or invisible part between its cap and the rest of cylinder.

Normal ?

nothing hidden but an hole.

And this "hole" is a surface too. Strange surface because it has 2 edges and those edges are 1 curve and 1 closed curve.

Having this type of surface is potentialy a source of strange thing.

Hi Sven, somehow the trimming boundaries on the tapered part have become corrupted, that's why it's not getting displayed properly.

I've attached a repaired version.

- Michael

Thanks for replies. FWIW, I can reproduce at will by starting with the just the attached joined surface and then drawing a cylinder within the surface followed by alternating tapered and regular extrudes.

Sven

Hi Sven, yes it looks like the tapered extrusion surfaces can get pretty dense. If you need to do a sequence of several in a row you may be better off instead putting in circles and then using Construct > Loft > "Loft style = Straight".

- Michael

Actually for this type of thing that is circular around a single axis line it would probably be best to use Revolve.

- Michael