Modelers either build out of the facotory or worn versions of the model. Warn shoot up aircraft have been used to rfepair others to keep/em flying along with vehicles & ships, etc.[:)]
With all the spare parts, warped & replaced parts, a RAM(Rear Area Maintence) dio would be a great project.[*-)]
From the 1st Aircraft chrashes parts have been recycled; the Bone Yard at Davis-Monthan has recycled a/c parts & pices to keep many a/c flying. There was a RAM facility at Cam Rhan Bay, Vietnam which rebuilt everything from Huey’s to F-4’s. [:D[