Re: brass cork boring tools
We use them exclusively for rubber stoppers in the lab. You center them on the narrow end of the stopper,hold the stopper steady with one hand and twist the cutter with force downwards,as though you were trying to screw it in. Cuts fast and clean. It helps to use a cutting mat under the stopper th prevent the cutter from cracking and bending on the cutting edge.There is a sharpener that you use to keep an edge on it, looks like a smooth brass reamer,tapered, to handle all the sizes.
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