Can a Momentary Perdo spell make something permanently weightless?
No. As noted under the description of the Technique Perdo on p. 78, Perdo magic can destroy properties of things. So a Perdo spell can destroy an object’s weight and make it weightless. The following paragraph goes on to say that items can only permanently lose properties that can be lost naturally, like freshness. Properties that cannot naturally be lost, such as weight, would return after the spell ended. It is up to the Troupe or storyguide exactly what properties can be lost naturally. Indeed, some decisions may need to be made about what properties Perdo can affect at all – is size a property? Weight is clearly something than an object can’t natually lose, but other properties like hardness or flexibility are more of a grey area.
