I am curently building a family for a Electric Duct Heater. Duct to match size of duct being cut into nominal 900 long, electric heater element inside duct, terminal box on outside of duct and 35 flange on conection.
I have everything working until I apply insulation or lining. They appear to select from the extents of the family so one side is selecting the flange the other is selecting the terminal box. Have tried modeling the element with extrusion and sweep with no change have tried nesting the flange and terminal box again with no luck. What am I missing?