The tools are self-gauging the proper size flare is produced when tubing is clamped flush with the top of the die block. Loosen clamping screw used for locking the sliding segment in the die holder. Slip the fitting nut and sleeve on the tube. Cut the tube squarely and remove all burrs. Do not use with corrosion-resistant steel or titanium. Use these tools only to flare soft copper, aluminum, and brass tubing. Never heat this filler in any other way than the prescribed method, as the alloy will stick to the inside of the tubing, making them both unusable. It can be re-melted and reused as often as desired. Store the fusible alloy filler where it is free from dust or dirt. Visually inspect with a borescope to make certain that no particles are carried into the system in which the tubing is installed. When using either filler methods, make certain that all particles of the filler are removed. ![]() After the bend is made, the alloy is again melted under hot water and removed from the tubing. The alloy-filled tubing is then removed from the water, allowed to cool, and bent slowly by hand around a forming block or with a tube bender. ![]() In this method, the tube is filled under hot water with a fusible alloy that melts at 160 ☏. In a modified version of the filler method, a fusible alloy is used instead of sand. After the ends are closed, bend the tubing over a forming block shaped to the specified radius. Both plugs must be tight so they are not forced out when the bend is made. After plugging one end, fill and pack the tube with fine, dry sand and plug tightly.
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