I was looking at ways to make float arms. I see plenty of DIYs here that has marine foam sheets glued together into squarish blocks, plumbing pipes tie-wrapped to the arm or pipe insulation/neoprene foams. I wanted to try the marine foam scheme, but getting my hands on those marine sheet foams seems a bit inconvenient (need large sheet, etc). I was thinking of using the polyurethane spray foam that they use for insulation since they are easily available.
I thought the easiest way is to cut the ends of an 1 liter soda bottle, keeping only the cylindrical section, spray the foam into it, then just drill a hole in the middle and insert it into my arm (I can cut the bottle after spraying the foam and letting it dry so there are less steps).
If I want to make it more fancy, I would get some 2 or 3 inch paper tube (or use the same soda bottle as above), grease the inside, spray the foam into it and slide the solid foam out when dry.
I can use bigger bottle for more buoyancy or small bottle for less.
Anyone tried this before? Will these compress in depth? They seem to be super stiff in the store.
LwangMember Since 20 Sep 2012
Offline Last Active Nov 24 2012 01:37 PM
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