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Tightening Poly Fabric

 
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mdnanwelch7(at)hotmail.co
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PostPosted: Fri Dec 14, 2007 10:20 am    Post subject: Tightening Poly Fabric Reply with quote
Hello John H.

While I haven't experienced it (ruining the fabric), I was only going by what the Poly Fiber Installation Book said. On page 14 is says:

*250 degrees is used for the initial tightening and to smooth wrinkles from seams before final heat tightening.

*350 degrees is for the final tightening.

*Above 350 degrees the fabric gets looser, permanently looser!

Next, they qualify the excess temperature with this explanation:

"At about 350 degrees polyester filaments start to thermo-soften and lose all measurable tension. At 415 degrees they start to disinegrate. Not good at all. You can see why calibration is so important. Don't guess or assume your iron's dial is accurate."

I guarantee my iron will get hotter than 415 degrees!! I admit I am not a Poly Fiber expert, and have yet to complete ONE finished product. It's just that I really want to go by the book in this case, and don't want to assume ANYTHING. Especially, my abilities to guess at a temperature.

All I'm saying is I felt very confident in tackling the shrinking job, once I had something in hand that showed me instantaneous temperature readings.

Have a nice day, Mike Welch

Re: Sport Pilot license advice...thanks. I think before long I will be giving up on the factory models. There may be a Firefly in my future, someday.

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jbhart(at)onlyinternet.ne
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PostPosted: Fri Dec 14, 2007 11:37 am    Post subject: Tightening Poly Fabric Reply with quote
At 10:19 AM 12/14/07 -0800, you wrote:
Quote:


All I'm saying is I felt very confident in tackling the shrinking job, once I had something in hand that showed me instantaneous temperature readings.


Mike,

My Mom could tell how hot an iron was by touching a wet finger to the
surface and listening to the hiss.

I like numbers.

Jack B. Hart FF004
Winchester, IN

do not archive

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