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by Lee
[July 28, 2014, 01:44:48 PM]

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Topic: DIY Halibut Harpoon  (Read 5319 times)

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demonick

  • Sturgeon
  • *******
  • Date Registered: Apr 2009
  • Posts: 2738
A few minutes to collect the parts at Home Depot and 30 minutes at home in assembly.  Parts will build 2 harpoons.  You could find the tube and rod cheaper.  Stainless would be best.

$10.67  Aluminum tube (36") 3/8" ID, 1/2" OD
$05.97  Aluminum rod (36") 3/8" OD
$04.89  Wood Handle
$01.37  Crimp sleeves
$01.24  Vinyl coated wire rope (4')
$01.18  Pipe insulation
--------
$26.69

These are the dimensions I used:
Wood handle 22"
Aluminum Rod 17" jammed 3" into handle
Tip 4.5"

Smashed 1-1/2" of the tube in vise, then pounded flat.  Ground the tip.  Grinding heated up enough to weld the tip together.  Final sharpening with a hand file. 

Drilled hole 2-1/2" from tip.  You want it balanced.  Note the hole is drilled parallel to the plane of the arrow tip.  This will hold the flat of the tip against the fish.  Cut tip off at 4-1/2" and clean up the cut.

Cut the wood handle at 22".  Drilled a 5/16" hole 3 " deep in cut end of wood handle.  Repeated drop the wood handle on hard floor and rod drives itself into hole. 

Loop wire rope through tip and crimp.  Crimp other end in another loop.

Finished.
« Last Edit: May 10, 2011, 08:53:49 PM by demonick »


The Nothing

  • De nihilo nihil
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~Isaac
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craig

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  • Location: Tualatin, OR
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Now we need a video tutorial of it in action!


Scott

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  • Location: Powell Butte, Oregon
  • Date Registered: Aug 2008
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That is a nice piece of work.  I have not used one before, so do you attach a cord to to 2nd wire loop or is it for a float?  I may try something similar for carp.
-Scott


demonick

  • Sturgeon
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  • Date Registered: Apr 2009
  • Posts: 2738
That is a nice piece of work.  I have not used one before, so do you attach a cord to to 2nd wire loop or is it for a float?  I may try something similar for carp.

You can tie a line or floats to the second loop.  I am going to use two crab floats on about 12' of line.  I figure with my fishing line still attached and the floats creating mucho drag, I can wear-down a good-sized halibut until I can slit gills and let it bleed out and/or reliably bonk it.  I do not think it is a good idea to tie off the line to a cleat.