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Non-Gun DIY Projects and Customizations This section is for your DIY spearfishing projects and customization other then spearguns.

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Old 03-03-2015, 02:22 PM   #1
Rosstnfound
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2 part PU foam density to fill floats?

I was wondering what is the recommended foam density to fill my lifeguard cans. I do not want the them crushing if a larger fish takes them down nor do I want them to weight more than they need to. I know the answer depends on depth but is 2lb adequate for most uses.

http://www.uscomposites.com/foam.html

Thanks,

Ross

Woops. should have used the search function. here it is http://www.spearboard.com/showthread...=urethane+foam
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Old 03-03-2015, 03:58 PM   #2
KILLIAN
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Re: 2 part PU foam density to fill floats?

The 4 an d 6 lbs versions have much higher values for to resist crushing etc. I have been eyeing the same products (us composites is by my home) for another project. 4 pound and six pound have much better Strengthqualities from what I read
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Old 03-03-2015, 04:51 PM   #3
stevemc1
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Re: 2 part PU foam density to fill floats?

I agree, go with a higher number than 2, if you are going for anything that could take it down. Styro will crush and it is maybe equal to 2.
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Old 03-03-2015, 05:08 PM   #4
phil herranen
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Re: 2 part PU foam density to fill floats?

I use 8# it fails at around 200' and and is safe to 150'
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Old 04-13-2015, 01:14 AM   #5
Rosstnfound
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Re: 2 part PU foam density to fill floats?

I filled two lifeguard cans today with 1 cubic foot of 4lb, 2 part foam. Each can takes about 1/2 cubic foot in case anyone want to do the same. I had enough for both but not much more.
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