I'm new here and need some help. I'm using a 1 1/4" ID sched40 pipe as a TV antenna mast. I intend to slide a 1 1/4" OD thin gauge pipe into it to allow lowering and raising the antenna from atop the roof without taking it loose from the gable. I used a Lenox hole saw to ream off the weld from inside the larger pipe and now the smaller pipe fits, but it's tight. If I can take another 1/16" off it'll work great. What tools are available to grind or ream more from inside the schedule40 pipe? I need to go down 12 feet.
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Schedule 40 as TV Antenna Mast