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Welwyn Tool Company has added a Japanese hole puncher to its range. Made by Ishihara, the Diamond puncher is claimed to make burr free round and oval holes in a fraction of the time needed by conventional methods.A range of electro-hydraulic punchers are offered for flat bar or angle iron, and for channel bars and H-beams of widely differing configurations. The small, lightweight punches are available for 110 or 240V supplies so that work can be done on site, rather than taken back ...

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