How soon can the nose be rasped after primary Rhinoplasty?

You should have your residual bump assessed by your surgery. There can be external soft tissue swelling contributing to a bump (and asymmetry) for up to 1 year after surgery. It may be possible to treat the bump with non-surgical means as well, depending on what the bump is due to.Ultimately, it may be possible to smooth down any residual bump in the future once your nose has healed sufficiently. You can read more about bridge bump removal at my web reference link below.

Thank you for your question.  Discuss this with your surgeon.  Rasping may or may not be the answer (if it is cartilage, rasping will not be effective).  Usually, it will be necessary to allow the great majority of the swelling to subside before making any determination about revision surgery.  This takes several months.  Many times, bumps turn out to be simply areas of asymmetric swelling (they can be very hard and mimic bone sometimes).