Instructables

Does anyone know how to make a harpoon gun for fishing?

I've wanted to go harpoon fishing for the longest time. I was wondering if anyone knew how to make a DIY harpoon gun, I dont want to buy something like that, I'd rather have the satisfaction of building it myself.

omnibot4 years ago

I know it's a while since you asked but I just saw this and thought of you:
Popular Science Light Harpoon Gun from 1952
owendrake4 years ago
This is a very old question, but if you're still wanting to attempt this than I'll tell you a good place to start.

Buy a Ramset gun from Home Depot or Lowes. The cheap version starts at around $20. These are already chambered to fire blank rim fire shells. Disassemble it and use it to build your receiver.


I am in the process of building a gun that fires arrows out of one. I stole the idea from this company that sells arrow barrels for Ruger .22 rifles. I'm not about to pay the $380some bucks for a couple of pieces of pipe that aren't even rifled. And like you said " I'd rather have the satisfaction of building it myself."
Here is a link to their site.
www.swivelmachine.com/html/rimfire.htm

Buy your "barrel" from here. This link is just an example of the type of material I think you could use. Keep an eye on psi (pounds per square inch). Don't build something that's going to blow up in your face.
www.grainger.com/Grainger/items/3ACV1?Pid=search

I'll put up an instructable once I have my gun finished. Good Luck!
i´m planning to make an instructable on a DIY fishing harpoon gun