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SECTION 5 SMITH CUTTING AND TAPERING 1.5.1 Cutting proper tapering tool set up and There are several types of power operating instructions. tapering tools available for use To cut Smith Fiberglass Products' with Smith Fiberglass Products' pipe, use one of the following: When properly assembled, the piping systems. Since none of 1. Fine tooth(32 teeth/inch) hack- tapering tool will reproduce a these power tapering tools are field-made taper to a ± 1/8 inch (3 manufactured by Smith Fiberglass saw, or mm) tolerance when compared to Products, it is the responsibility of 2. Circular saw with a crushed a factory-made tapered spigot.The the tool operator to ensure that the tungsten carbide or reinforced angle for properly made field tool being used is capable of abrasive blade, or tapers for 2"-4" (51-102 mm) reproducing a field-made taper diameter pipe should be 13/a that is within the tolerances of a 3. Sabre saw with a fine-tooth degrees. Note:If an old-style blade factor made tapered spigot.Refer metal or tungsten carbide grit holder is used, the blade angle to Smith Fiberglass Products Man- blade, or should be set for 11/2 degrees. ual No. F6600 for the correct 4. Jigsaw with carbide grit abra- Preferably, the old-style blade procedures to verify matching sive blade (See Figure 1.5.1) holder should be replaced. tapered spigot tolerances(factory- , Note: Cutting operations for versus field-made). fiberglass pipe can generate Note: When using all tapering dust or cutting chips that are irritat- tools, protect pipe from vise dam- ing to the skin, upper respiratory age by placing rubber sections or tract, and eyes. Because these sleeves (180° sections of pipe cut materials are irritating,good venti- from the same size pipe being lation for the installation crew tapered)between the pipe and the should be used to prevent exposure. scribe�'ne vise.When pipe is clamped into a A nuisance dust breathing filter chain vise, extend pipe at least 12 should be used when working in inches (305 mm) beyond chain to areas where wind and dust are prevent oval-shaping of the pipe. present. Operators should wear heavy cotton clothing, including ') long-sleeve shirts, which protect the skin from the dust. Eye protec- 32 Teeth Per Inch tion is required for the tool operator. Blade 1.5.2 Tapering The matched taper concept employed by Smith Fiberglass Products is the key to excellent C joint performance.Afield tapering Abrasive tool kit is available from Smith Blade --- Fiberglass Products for making 2"- 4" (51-102 mm) diameter tapered O spigots in the field (See Figure 1.5.2). Refer to Smith Fiberglass Figure 1.5.1 Figure 1.5.2 Products Manual No. F6600 for y �-