3D printed Float for Backscatter HF-1 Strobe - Add 220 grams buoyancy!

Float for Backscatter HF-1 Strobe 

Add 220 grams buoyancy!

https://makerworld.com/en/models/2877582-float-for-backscatter-hf-1-strobe-220g-buoyancy

The Backscatter HF-1 is one of the best strobes for underwater photography, but its biggest drawback is how much it weighs in water. The HF-1 is 250 grams (8.8 oz) negative in water with batteries. 

This 3D printed float will add 220 grams of buoyancy leaving it just 30 grams negative. (1 oz) You don't want to have the strobe be positively buoyant. Slightly negative is easier to handle and balance the overall system. 

Balancing your rig is important. If you need to add additional buoyancy to your camera rig, I suggest using float arms or Stix jumbo floats on the arm segment closest to your housing. Leave the second arm connected to the HF-1 without additional buoyancy. 

Attach Float to the HF-1:

The float has anchor points that will allow you to thread 1/8 inch (3 mm) bungee cord. Many divers keep 1/8 bungee on hand as it is so useful. It can be bought in bulk online or at any dive shop. Tie a simple overhand knot at each end of the bungee to keep it from slipping thru the anchor. It should be just slightly taught with plenty of elasticity to pull over the strobe and keep it snug. 

I have tested to depths of 130ft/40m, but it may survive greater depths. As these floats are completely external to the strobe and housing, there is no risk to your equipment should they fail.

Note before printing: This is a technical and exacting print. It requires very specific and exact filament and printing parameters. If you ignore or change the defined print profile and settings it is very likely that your float will not work. 

 [And YES - You can make watertight and pressure resistant 3D printed objects with no added sealants or post processing!]

Edited 6 hours ago6 hr by Dave_Hicks