Floating key ring fobs

[asemery]

Floating key ring fobs
day-glo yellow - red/black paracord - 2" diameter, 7 passes

 

[Ascobis]

What did you use for the core?

 

[asemery]

What did you use for the core?

plastic (practice) golf balls, slightly larger than a ping pong ball

 

[asemery]

another floating key ring fob
I prefer the natural look of the cotton twine
Ping pong ball core, 2 1/4" diameter, 6 passes

 

[Essexman]

Have you tried seeing how much weight one ping pong will keep afloat?

I did a few experiments years ago and gave up, anything more than one door key and it sunk!

 

[asemery]

Have you tried seeing how much weight one ping pong will keep afloat?

I did a few experiments years ago and gave up, anything more than one door key and it sunk!

For this size fob I have the same results, especially with cotton twine,

 

[mousey]

Maybe use a cord that floats? paracord [nylon] specific gravity = 1.14. Water [fresh] = 1. if it needs to float a lower number is better, Dyneema = .98, Polypropylene = .91.

Not sure if Dyneema or a thin Polypropylene is as suitable to make a float with though. [Polypropylene degrades more in UV]

[Cotton = 1.54]