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Hull Blisters
I've dealt with hull blisters and have finally decided that they are
normally no big deal. I have never heard of hull failure from them and they seem to be simply a cosmetic problem. As far as drag goes, my fixed prop causes more drag. However, some ppl really hate em and go so far as to PEEEEEEEEELLLL their gelcoat (sounds really painful) dry the matting and re-gelcoat. I call this the Peel 'n Pray method cuz most offen the blisters return. Its just too hard to remove all the water from the matting even with heaters n such. Once, I took an electric heat gun and applied it about 4" from a blister (through the gelcoat)and was amazed at how much water came out of the blister (This was after 2 months of drying). Clearly, passive drying dont work. SO: Useless idea #3727 Peel only in narrow strips in a grid pattern to allow moisture to exit and apply heat to the grid squares. However, heating the glass is inefficient when you really want to heat the water. Instead, use microwaves which couple to polar molecules such as water and dont couple too well to the glass or resin (ie, you only heat the water). You could measure the microwave intensity inside the boat at different places as a function of time to determine dryness. The moisture would attenuate the waves and a dry hull would not. |
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