noun
post-processing; after-processing; modification; machining
Technical term used in manufacturing and engineering for additional work done on a product after its initial formation or assembly. Covers processes like finishing, cutting, coating, or assembly adjustments.
この部品は成形後に後加工が必要です。
This part requires post-processing after molding.
後加工の工程で表面を滑らかに仕上げます。
In the post-processing stage, the surface is finished smoothly.
仕上げ often implies finishing or final touches, which can be part of 後加工, but 後加工 is broader and includes any subsequent modification.
Compound of 後 (あと, 'after') and 加工 (かこう, 'processing'). A straightforward technical term with no obscure historical derivation.