Camera Arm Float Material?

[kammel78]

Anyone have a good idea what type of "foam" is being used in these modular float arms? Specifically, not the rigid carbon fiber type hollow tubes type.

These...https://www.backscatter.com/Stix-Adjustable-Float-Belt-for-Macro-ports

 

[rmorgan]

I use yoga blocks sometimes. Cheap and they don’t compress at all. I cut them in half lengthwise and bore a 1” hole which fits my strobe arms.

 

[Simpel]

I use net floats

Float CD | 250g buoyancy | 91x45mm | 14mm center hole

sheave shape | brown | PVC

engelnetze.com

 

[1fspeed]

Yoga blocks seems like a good idea... I used this stuff. Similar to the Stix material. Doesn’t compress and with the rubberized coating I applied, it’s been very durable.
H100 PVC FOAM 1" X 10" X 12" | Aircraft Spruce

 

[kammel78]

I use yoga blocks sometimes. Cheap and they don’t compress at all. I cut them in half lengthwise and bore a 1” hole which fits my strobe arms.

Do you know what material it is?

FWIW, I'm trying to find the raw material (for this and another project).

 

[rmorgan]

Like these, https://a.co/d/i5iaERK

 

[dm9876]

Not sure what type of foam those ones use but the foam used on deep ocean ROVs etc is called Syntactic foam. Syntactic foam - Wikipedia
I've not looked into it in a long time but I think DIY is possible but not easy or cheap. Maybe there are more affordable sources of it now.

 

[Darnold9999]

I have also used deep sea net floats, available at any place that supplies commercial fishers. Cut them in half put them on the arm and use plumbing glue to glue them back together. No idea what the materiel is but I had a couple hundred dives on two float arms set up that way. Here is an example: FLOAT SUPER DEEP 3000 BLACK T 300