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Old 08-21-2011, 12:10 PM   #1 (permalink)
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Lightbulb Heat shrink window film for body mods

I was just wondering if anyone has tried this stuff for testing aero body mods? I used some to seal off the motor grills on my EV Fiero and it's held up for over a year, until I poked a hole in it by mistake. I was thinking of using it with some minimal framing to play with fastback shapes for the car, wheel well covers, etc. It's cheap, shrinks smooth and tight with a heatgun, and applies easily with the double backed tape. You might even be able to use it as a form for the final shape in fiberglass. Thoughts?

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Old 08-21-2011, 12:35 PM   #2 (permalink)
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Sounds like a great idea.

Boat/auto heat shrink wrap is much thicker, up to 12 mils, and would be more
damage resistant. Unfortunately, it is usually available in industrial sized rolls,
like 40" x 100 ft, at about $200+/roll.

An cost conscious alternative may be the wide sticky tape used to join/repair
the rolled material. Aggressively sticks to itself, can be overlapped to make
wider panels:

9 mils, 4 in. x 180 ft. ~$17US: Heat Shrink Tape
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Old 08-21-2011, 12:41 PM   #3 (permalink)
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I also don't know if that heavier stuff will shrink with a hair dryer or heat gun, they usually use big propane fired units. Of course they are doing a large boat, so taking your time with a small heat gun may work. The tape is a good idea.
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Old 08-21-2011, 02:22 PM   #4 (permalink)
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Reminds me of those balsa framed model airplanes. I like it.
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Old 08-21-2011, 05:01 PM   #5 (permalink)
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I would like to see some pictures of how it can be used for car mods. Sounds promising!
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Old 08-21-2011, 09:20 PM   #6 (permalink)
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I have the Home Depot $1.99 window film as grill block and rear wheel fairings. The grill block I've had for over a year and the fairings 6 months. It seems to last about 6 months before you have tear it off an replace. (Replaced grill twice). I'll do a tear off / wash/wax and reinstall in the next month or two. Last time I switch to two sided carpet tape instead of the thin stuff they give you in the box.
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Old 08-21-2011, 10:08 PM   #7 (permalink)
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Very interesting. Does anyone have any experience with this in extreme cold temps? Does it get fragile?
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Old 08-21-2011, 10:58 PM   #8 (permalink)
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I think there are indoor and outdoor versions of it, with the outdoor being a bit thicker. I've had it last through the winter on the outside of a house, I don't think winter temps would affect it on a car.
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Old 08-22-2011, 04:18 AM   #9 (permalink)
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The whole body of the Westfield iRacer is made of heatshrink film over thin formers. It's really quite cunning, but I imagine it'll have a few people put their hands through it...
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Old 08-22-2011, 08:39 AM   #10 (permalink)
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If it's the stuff they use on boats it's pretty rugged, a hand won't go through without trying.

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