Hawaiian Sling DIY from PVC

I’ve never used a Hawaiian sling before (a spearfishing tool), and thought I’d make one for the next coast trip. It’s made of PVC piping 15mm and 3/8″ surgical tubing. The shafts are 5mm x 900mm high carbon steel with a notch cut into the back like an arrow.

I used zip ties to hold everything together, we’ll see how long they last in the salt water. Make sure you glue the PVC pipe well together!

Similar to a slingshot, it has a wrist support to counteract the force of the band pull.

Similar to a slingshot, it has a wrist support to counteract the force of the band pull.

I welded on a smaller gauge wire for the barb, and grinded it smooth.

I welded on a smaller gauge wire for the barb, and grinded it smooth.

An "arrow" string for notching.

An “arrow” string for notching.

Ready to shoot!

Ready to shoot!

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Pole Spear 8 foot DIY 2013

Inspired by a great snorkeling trip to Jervis Bay, I’ve made a couple pole spears similar to the ones we used to make in California. These are pole spears for spearfishing shallows and sandy reefs.

I was able to find the same green garden poles a the local Bunnings, a nice cheap steel tube wrapped in plastic. They even have little bumps for added grip. Although not the strongest material, it is lightweight, and makes for a very balanced and fast shot. Hit a rock and you may bend the tubing!

We also used bamboo which had the same lightweight characteristics but was a little more resilient to missed shots into the reef. It does split however with time and (ab) use.

5-prong spearhead reused from the old polespear I didn't like.

5-prong spearhead reused from the old polespear I didn’t like.

Sling band made from nylon rope and 3/8" surgical tubing from Clark's Rubber.

Sling band made from nylon rope and 3/8″ surgical tubing from Clark’s Rubber.

  • Shaft: Bunnings green garden pole, plastic over steel tube $5.50
  • Spear head: Land and Sea spearfishing 5 prong barbed
  • Length overall: 2555 mm (~8ft)
  • Sling material: 3/8″ black surgical silicone tubing, Clarks Rubber $10/m
  • Sling length: 900mm
Polespear is 8ft long...

Polespear is 8ft long…

Detail of the green garden pole from the hardware store.

Detail of the green garden pole from the hardware store.