You will need
  • wire of diameter 2 mm, stainless steel rod with a diameter of 6 to 8 mm (to be used for harpoon), duralumin tube with a diameter of 13 mm (to be used for trunk), two wooden plates for the handle (oak, beech, etc.) and heat-treated, special spring, with corrosion-resistant coating.
Instruction
1
Take the dural tube. Cut the two ends of the tube thread. This can be done with the help of special equipment or manually, no difference.
2
Cut a groove under staple. The length of the groove should be approximately 160 mm. Blow the cover and nadolnik. Drill using a drill in the plug hole to harpoon.
3
Take the prepared wooden plates for the handle and clamp them in a Vice. Plates can be cut the required size of oak, ash, beech and other hardwoods. Drill in clamped plates the hole for the barrel of the crossbow.
4
Cut the desired contours to your arm. By making a selection under the trigger mechanism. The depth of this sample should be approximately 3.5 mm. Connect the two halves of the handle on the trunk and fasten with screws.
5
Manufactured by simple metal working trigger mechanism for a crossbow.
Make a harpoon. To do it should be of stainless steel.
6
Attach it to the harpoon Lin, which is obliged to slide on him. Lin should rest against the tail, and to operate and amortised through special ftoroplastov ring.

Take a strip of steel and cut out her lessonrating.
7
Attach lakobashvili with two screws to the stub of the barrel of the crossbow.
Gun ready, it remains only to insert a spear or dart and you can safely go underwater to hunt and wait for a good catch.
8
Pay attention to what good the crossbow needs to have a convenient reel holder. It is desirable that it was easily removed, and also served as an additional guide for the harpoon, which increases the accuracy of the shot.
9
Take care and harpoons. Craftsmen produce them yourself, but this kind of articles sin aerodynamic deviations, so few people can make an accurate shot with a homemade harpoon. It makes sense to buy tips for self-made crossbow.