metal work work
2.The old wooden chest was richly encased in leather, protected at the comers with ornamental metal-work.
4.The experiment of bending of the lapping tool has indicated that the precision of the lapping tool is very high, the average error achieves 0.0628mm. The experimental results of lapping indicate that the lapping tool by bending method is able to lap paraboloid work-piece, lapping the plastic work-piece silhouette average error to achieve 0.0521mm, lapping the metal work-piece silhouette average error to achieve 0.0279mm, further indicated that the lapping efficiency is improved greatly and the cost is low greatly by this method.

