When drilling composites, the low interlaminar strength of the material can result in splintering and delamination of the hole. The drilling process often relies on some kind of backside support. For applications where backside support or backing material is not cost effective, a diamond coated drill was developed that--even when operated at non-optimum speeds and feed rates--produced a hole free of delaminations. View this paper that describes the tool and its success at unsupported drilling.
Related ContentMore Than Metal
Modern Machine Shop magazine doesn’t cover only the machining of metals. Here are some interesting tidbits about machining non-metallic materials from a few of my past stories.