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The saddle is PVC and held on with two U bolts. Put the clamp in position, on the top side if putting it on a horizontal pipe. Mark around on the inside of the hole in the saddle. Use a new 1/8th drill bit you might need several, and make a series of holes almost connecting around the hole you marked. When you have them all drilled, elongate them to connect them, When most of them are connected tap on the plug until it begins to break out. Try and catch it before it falls into the pipe. You can drill 1 hole in the center and put a screw in it to hold onto. Put a bead of plumber putty around the hole where the saddle will compress it. Put the U bolts on and tighten.

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Q: How do you install a saddle on cast iron drain pipe?
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