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    How to Make a Speargun Rubber

    August 04, 2016 3 min read

    How to Make a Speargun Rubber

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    Here at Adreno, we’ve compiled an easy step-by-step guide to making a speargun rubber powerband, to help you get the most out of your spearfishing gear.

    What You'll Need:

    • Some rubber
    • Two pieces of constrictor cord
    • A lighter
    • A bridle
    • A bridle tool
    • Silicone spray
    • A punch or a screwdriver
    Step 1: Measuring the Rubber
    • This is to ensure the rubber is the right length for you speargun. For example, if you’ve got a 110 speargun, you'll need a 16 millimetres piece of rubber, cut to 55cm long.
    • If you’re not sure what rubber you’ll need, the Adreno staff will be more than happy to help. Send us an online enquiry or give us a call: (07) 3391 2299.
    Step 2: Looping the Ends of the Constrictor Cord
    • Tie a loop at each end of the constrictor, this will help to pull the knot tight when you're finished, an overhand knot usually works best.
    Step 3: Spraying the Ends of the Rubber with Silicone
    • Take a can of silicone spray and spray each end of the piece of rubber.
    Step 4: Inserting the Bridal
    • First, take your bridle tool and bridle.
    • Slot the bridle into the end of the tool and hold the end in place using your thumb and forefinger so it doesn't roll out.
    • Take the piece of rubber and hold it firmly right near the cut. Before pushing the bridle into the end using the bridle tool, try to get it in quite deep so it stays in place.
    • Once you've put it in flick the end of the bridal tool to the side and hold it down with your thumb on the Dyneema while you remove the tool to prevent it from sliding back out.
    Step 5: Tying a Constrictor Knot
    • Place the constrictor cord towards the end of the rubber, where you've just inserted the bridle.
    • Tie it in a clove hitch knot, which if you're not familiar with can be found here.
    • Once you’ve tied the knot, slide the constrictor right up to the end of the rubber (aim for just a few millimetres of overhang).
    • Pull the knot in nice and tight.
    Step 6: Really Tighten It!
    • Grab the bridle tool and any other small/handy tool that you have lying about, like a hole punch or screwdriver.
    • Slot these into the loops at the end of the constrictor cord that you made earlier.
    • Firmly grasp each tool and pull your arms away from each other to really tighten the knot. This will stop you bridle from slipping out later.
    • Using the Other End of the Bridle Repeat Steps 5 & 6
    (Note: if you have a closed muzzle gun like some of the Rob Allen's, you'll want to make sure your rubber is in the muzzle before you tie up both ends).

    Step 7: Trimming and Burning

    • Once you've tightened up both ends, cut off and burn the excess constrictor cord.
    Congratulations! You now have a powerband to help you on your next spearfishing adventure.

    For everything, you'll need to make a speargun rubber and more simply visit our online store or pop in and talk to one of our friendly staff today.