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Probangs for Cattle and Calf

Probangs for Small Animal The cup is turned from free cutting brass stock diameter 7/8 inch (22 mm) for calf probang and 1 1/8 inch (28 mm) for the cattle. Machining sequence as follows: Mount in chuck, face, centre drill. Pilot drill to full depth, finish drill to drawing. Bore chamfer at 60° to edge, remove sharp edge to provide scraping not cutting edge. Part off to drawing. Reverse in chuck, centre drill, drill through No 30 diameter and countersink to 1/4 inch (6 mm) diameter. Turn profile with form tool…

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