John Winters wrote: >>>>For example, if you have a paddle that has a blade area of 110 sq. inches and coat both sides of each blade you will paint 440 sq. inches or just a bit under one square foot. According to the information I have International Interthane weighs about 12.28 lbs per gallon and will coat 800 square feet per coat. They recommend three coats so you will add about .04605 lbs ( .7368 ounces) (assuming 100% solids) to the weight of your paddle and all near the ends which increases the moment of inertia.<<< John, if I read this correctly, it looks like this may have an arithmetic mistake. Since there's 144 square inches in a square foot, then three coats (where each coat covers 440 square inches) would require 3 x 440 = 1320 square inches which equals 9.17 square feet. If the paint weighs 12.28 pounds per 800 square feet, I calculate that 9.17 sq feet would weigh .14 pounds or 2.25 ounces. Evan Dallas Woodinville, Washington *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
"Evan Dallas" <evand_at_pensionresourcegroup.com> wrote: > John, if I read this correctly, it looks like this may have an arithmetic > mistake. > > Since there's 144 square inches in a square foot, then three coats (where > each coat covers 440 square inches) would require 3 x 440 = 1320 square > inches which equals 9.17 square feet. If the paint weighs 12.28 pounds per > 800 square feet, I calculate that 9.17 sq feet would weigh .14 pounds or > 2.25 ounces. While we are fine tuning John's post, I should mention that his calculation (as he states) assumes 100% solids, certainly not the case for most polyurethane two-part paints. Probably they run something like 30% VOC, so that 2.25 ounces of applied paint probably results in about 1.5 ounces of weight after the volatiles have evaporated. In any case, John's point: ***adding weight to an ultra-lightweight paddle just to restore the gloss is a minor folly*** is well taken here. -- Dave Kruger Astoria, OR who likes his paddles scratched and dinged *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
Dave Kruger wrote: > While we are fine tuning John's post, I should mention that his > calculation (as he states) assumes 100% solids, certainly not the case > for most polyurethane two-part paints. Probably they run something like > 30% VOC, so that 2.25 ounces of applied paint probably results in about > 1.5 ounces of weight after the volatiles have evaporated. > > In any case, John's point: > > ***adding weight to an ultra-lightweight paddle just to restore the > gloss is a minor folly*** > > is well taken here. If all...um, who was it who asked the orginal question? Peter?..Peter is interested in is getting rid of the scratches for cosmetic reasons, a nice coat of wax, well-buffed, would probably help with only tiny extra baggage. -- Steve Cramer Athens, GA *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
Steve wrote, >If all...um, who was it who asked the orginal question? >Peter?..Peter is interested in is getting rid of the >scratches for cosmetic reasons, a nice coat of wax, >well-buffed, would probably help with only tiny extra >baggage. G'Day Steve, I'm most concerned that the paddle not deteriorate and break. Advice so far says this is not going to happen. Dave seems to get by with well worn paddles and John suggests minor surface scratches are not going to hurt. But re aesthetics. Form follows function! And with equipment if it looks as if its going to break the engineer in me finds it unattractive. As soon as I know its not going to break then it suddenly becomes beautiful. This is why I don't mind scratched boats but worry about scratched paddles, which are much less robust and take a lot more stress if you're paddling at sea. At least I've broken more paddles than boats. Buffing is what I will opt for initially. Touch wood! All the best, PeterO *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
In a message dated 1/17/2005 11:35:23 AM Pacific Standard Time, kdruger_at_pacifier.com writes: While we are fine tuning John's post, I should mention that his calculation (as he states) assumes 100% solids, certainly not the case for most polyurethane two-part paints. Probably they run something like 30% VOC, so that 2.25 ounces of applied paint probably results in about 1.5 ounces of weight after the volatiles have evaporated. Put another way: Those evaporative gases become global warming gases and the Ross Icefield in Antarctica breaks open, all for the vanity of Peter's paddle. Shocking! A Very Big Wink, Rob G *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
Rob posed that damning question: >Those evaporative gases become global warming >gases and the Ross Icefield in Antarctica breaks >open, all for the vanity of Peter's paddle. Shocking! G'Day Rob, You have gnawed at the strings of my conscience! I'm torn! Whether to buff or to paint, or accept the beauty of age! So consider: Does buffing or painting create more greenhouse gas? I mean just see what happens when you inconsiderately clean up a paddle! http://www.ssec.wisc.edu/media/IcebergC-19.html All the best, PeterO *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
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