Add “Convert Solid to Void” / “Convert Void to Solid”

[david7K7DR]

Revit should allow users to convert an existing solid form directly into a void form, and vice versa.

Currently, if a solid extrusion, blend, revolve, sweep, or swept blend needs to become a void, the geometry generally has to be recreated as the corresponding void form. This is unnecessary when the profile, path, constraints, dimensions, parameters, and resulting geometry already exist.

Add a command such as:

Convert Form → Solid / Void

The conversion should preserve:

• Sketch/profile geometry

• Dimensions and constraints

• Parameters and formulas

• Work plane/host

• Extrusion depth

• Sweep paths and profiles

• Blend profiles

• Revolve axes

• Existing geometric relationships where possible

This would make family creation and editing significantly faster and eliminate the need to rebuild identical geometry simply because the form type was created incorrectly or the design intent changed.

Ideally, it could work like changing a property: Form Type: Solid / Void.

[MiWolff]

Isn't that what this property is for?

[david7K7DR]

You're right — I completely missed that property. I had previously tried converting geometry in a context where the option wasn't available and incorrectly assumed Revit couldn't do it generally. Thanks for pointing it out.