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+====== How to use a Hacksaw ======
+**Choose the Right TPI (Teeth Per Inch)**
+TPI (Coarse): For soft metals like aluminium, brass, copper, and thick plastics.
+TPI (Medium): For general mild steel, angle iron, and electrical conduit.
+to 32 TPI (Fine): For hard metals like tool steel, cast iron, thin-walled tubing, and sheet metal.
+  The Golden Rule: You must have at least 3 teeth touching the metal at all times
+**Install the Blade Correctly**
+  Direction: The teeth must face forward (away from the handle). When you push the saw, it should cut; when you pull it back, it should glide. (Check the arrow printed on the blade!).
+  Tension: Tighten the wingnut until the blade makes a high-pitched "ping" when you pluck it.
+**Secure Your Workpiece**
+  Clamp the metal firmly in a bench vice.
+  Cut close to the vice: Keep the cut line within 1 inch (2.5 cm) of the vice jaws. Clamp it tight!
+**Mark Your Cut Line**
+  Use a scriber or a sharp awl to scratch a line across the metal. (Pencil marks rub off on metal).
+  Use a try square to ensure the line is perfectly perpendicular if you need a straight cut.
+  Put a centre-punch mark right on the line to help the blade "bite" when you start.
+**The Cutting Technique (The "Push" is the Cut)**
+  Hacksaws only cut on the forward push stroke.
+  Starting the cut: Place your thumb against the side of the blade to guide it. Use very short, gentle strokes pulling the saw backwards a few times to create a shallow groove (a "kerf"). Once the    groove is started, move your thumb.
+  The Stroke: Use long, full strokes—using the entire length of the blade. This clears swarf (metal shavings) from the teeth.
+  Pressure: Apply firm, heavy pressure ON THE FORWARD PUSH ONLY. On the backward pull, lighten the pressure completely so the teeth just glide back.
+  Speed: Aim for 40 to 50 strokes per minute. This is much slower than you think. If you go too fast, the teeth will heat up and go dull—even bi-metal blades have their limits.
+**Angle and "Lead"**
+  Hold the saw at a 45-degree angle to the metal (not perfectly horizontal). This makes the blade cut a wider kerf and prevents it from binding.
+  When cutting large pipes or thick bars, rotate the blade slightly so it points diagonally towards he cut. This reduces the surface area the teeth have to cut at once.
+**Finishing the Cut**
+  As you get to the bottom of the cut, slow down and lighten your pressure. If you push hard at the very end, the metal will tear, leaving a sharp burr, and the saw will jump.
+  Hold the piece you are cutting off with your free hand so it doesn't drop and bend the blade as it breaks free.
+  YouTube Video on how to use Hacksaw