I am creating a Calabash Pipe for 3D printing. I am hoping to use it in a Theatrical production. But, it is also a platform for me to hone my surfacing skills, and to test some approaches to fastening objects when they are to be 3D printed.
There is a circular array of features, that I use for the thread on the larger opening. At one point it was there, and then at some point I noticed that it was no longer there. The feature is in the tree, but it does not show up on the model.The 1st instance is there, just not the arrayed versions.
Nothing seems to be suppressed or hidden. I even tried deleting the array itself, and then re-creating it. The copies show up on the preview, but as soon as I click OK, they go away.
Any ideas what is happening? The part file is attached.