The selected face could not be offset

[Anonymous]

Hi,

Very new to Fusion 360, and need a bit of help here.

I'm having trouble with creating a shell. It lets me make an external shell - but not internal, and I get the error message 'The selected face could not be offset'.

It is for a bicycle tyre, which has been revolved from a sketch and I now need to remove the interior i.e. make it a shell.

Thanks in advance!

[g-andresen]

Hi,

please share the file

File > Export > save as f3d on local device > attach to next post

günther

[Anonymous]

Attached here, vielen dank

[jhackney1972]

Due to the interior sharp corners, I believe the shell is restricted to a small wall thickness.  The max I could tweak out of it, after modification of your sketch slightly, was .9 mm.  Model is attached.

[TheCADWhisperer · Accepted solution]

Here is my attempt with a bead on the tyre.

Shoould be able to get whatever wall thickness you need.