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Old May 27, 2005, 09:47 PM
A&P Mechanic
may-day's Avatar
San Antonio
Joined Mar 2005
326 Posts
anybody have any experience with OS film?

as it says...

i am building a daddy-o from some pull out plans and i am building right off the plans. it is supposed to be scaled up 200%. i am looking for really lite material and i have stumbled onto the OS film web site. claims to be .5 microns thick. probably a real pain in the ( you know) to work with. so i was just wondering if anyone has any 1st hand knowledge of the stuff.

any other covering materials easier to work with would also be helpfull. the full scale version is supposed to weigh some 254 grams. mine is on a slimfast diet until it gets down to around 30 grams. just thought some info might help.

thanks
dave
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Old May 27, 2005, 10:31 PM
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vener's Avatar
Malaysia
Joined Mar 2005
354 Posts
ok lets see here a human hair is 100microns thick yet this OS film is .5micron thick??
and i think a transistor in a p4 processer is small
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Old May 27, 2005, 11:03 PM
A&P Mechanic
may-day's Avatar
San Antonio
Joined Mar 2005
326 Posts
http://www.osfilm.com/

pretty thin stuff.

dave
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Old May 27, 2005, 11:50 PM
My member is not
Zlatko's Avatar
Melbourne City Hlpt, Australia
Joined Jun 2004
759 Posts
Hmmmmm,

It looks like its about 0.8gm / square meter....
Thinest Wes-Technik Mylar is 2.2gm / square meter and is 2micron thick (0.002mm)
I guess 0.5 micron ( 0.0005 mm ) is possible .
Thanks for your find Dave.

Cheers
Zlatko
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Old May 27, 2005, 11:59 PM
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RC_AV8R_181's Avatar
state college, pa
Joined Aug 2002
326 Posts
Hi Dave,
I just covered a model with Harlan Ultrafilm, which is ~1.4um thick and 2.2g/m^2. I wouldn't recommend it for anything over 10g max. Have you considered codenser paper? It's 5.3 g/m^2 and pretty easy to work with, and it doesn't cost $32 a role. 2um mylar would probably work pretty well too, and is 3.3g/m^2.
Ben
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Old May 28, 2005, 09:36 AM
is it flying time?
Jerry Combs's Avatar
Wyandotte Oklahoma
Joined Oct 2004
2,777 Posts
I use OS film on my indoor free flight models and it is not that bad to work with once you get used to working around the static cling problems. I don't think that you will be happy with it in your application as it is VERY fragile and tears very easily. For your use, I would use the Ultrafilm from Ray Harlan. It is slightly heavier but much more durable. For either use a spray glue such as 3M 77 sprayed lightly on your wing and stab frames and cut it out using a 5 watt soldering iron or a cautery, don't try to use a razor blade or sissors.

Jerry Combs
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