A comparative study of different configurations of locator pads used to attach a portable piping lathe to a section of steel pipe was performed. The axial force exerted by adjustment screws attached to the locator pads was determined experimentally. The minimum axial force required to restrain relative motion between the lathe and the pipe during a worst case operating condition was used as a criterion to determine the effectiveness of a particular contact pad. Six different geometric variations and two different materials were investigated and it was found that aluminum, in a simple configuration, provided the best clamping capability.

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