I was approached by a local structural engineering firm to make a model. They wanted to have a model of a complex re-bar connection that they could show to a contractor on a project. The model they provided was very complex, with a lot of very thin structural members and fairly complex internal geometry. There was absolutely no way that this could be done with traditional ABS supports; it was just too delicate and complicated to be able to manually remove the support material. Using dissolvable HIPS filament for the supports, I was able to come up with a workable solution - although it took nine tries to come up with a print configuration that produced the desired results.
kpff_conn.jpg
-Crawford