[UPDATE: VIDEO BELOW] That big beautiful specimen you see dangling behind our mayor is the front part of what will be a 100-ton tunnel boring machine, or "TBM," as they say in the boring biz. Today ...
The corrosion-resistant 319 SW series boring heads use standard carbide inserts (CC, SC, and SP) and provide coolant-through direct to the cutting edge. BIG Kaiser Precision Tooling, the developer of ...
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