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The WILLIAMS COMFORT PRODUCTS 3906-300-3P is a three-piece bimetal hacksaw blade set covering the three most common tooth-per-inch configurations used in trade work. Each blade measures 12 inches in length and is constructed with a bimetal design, bonding a high-speed steel tooth edge to a flexible alloy steel backing. The set includes one blade at 18 TPI, one at 24 TPI, and one at 32 TPI, giving technicians a ready option for cutting through a range of materials and wall thicknesses without swapping out for a specialty blade. Plumbers, HVAC techs, and electricians are the primary installers who rely on this type of assortment.
This blade set is suited for residential and light commercial trade applications where cutting pipe, conduit, unistrut, threaded rod, and sheet metal is routine. The three TPI options cover coarse cuts on thick stock with the 18 TPI blade, general-purpose cuts on medium-thickness material with the 24 TPI blade, and fine cuts on thin-wall tubing or sheet goods with the 32 TPI blade. The assortment is a practical choice for field technicians who carry a single hacksaw frame and need blade options on the job without making a separate supply run.
Designed to fit standard 12-inch hacksaw frames used in plumbing, HVAC, and electrical trade applications.
Install the blade into the hacksaw frame with the teeth pointing forward, away from the handle, and tension the blade firmly before cutting. Select the correct TPI for the material: use fewer teeth per inch for thick stock and more teeth per inch for thin-wall material to avoid tooth stripping. Keep at least three teeth in contact with the workpiece at all times during the cut. No power tools or specialized codes apply, but follow standard shop-safety practices when cutting metal.
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