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  • January 16, 2018, 08:24:53 AM

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Author Topic: Japanese Tissue with Transparent Ultracote over it  (Read 716 times)

Online Mike Griffin

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Japanese Tissue with Transparent Ultracote over it
« on: November 19, 2017, 03:56:25 PM »
Just wanted to show the difference inappearance. I covered this wing with yellow Japanese tissue.  I am going to iron on transparent Ultracote over it for strength and shininess.  Here is the difference in appearance.  One half of wing is cover with the transparent Ultracote and the other isn't.

Mike


Offline Brent Williams

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #1 on: November 20, 2017, 12:21:18 AM »
Looks good Mike.  I've got one like that as well. 
This Gieseke Nobler uses Japanese tissue covered with thin lamination film. 
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Online Mike Griffin

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #2 on: November 20, 2017, 08:48:44 PM »
Brent I really like the looks of that.   I might do something similar.

Mike

Offline john e. holliday

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #3 on: November 21, 2017, 09:47:14 AM »
This is what I use.  It has a cloudy look to it until it is ironed down.   Works as well as SLC.

http://www.ebay.com/itm/Clear-Super-Flite-Top-Mylar-Model-Covering-10-x-25-Alt-to-Monokote-Ultracoat
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Offline Matt Piatkowski

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #4 on: November 22, 2017, 04:04:14 PM »
Hello,
My name is Matt Piatkowski. I fly stunt in Toronto, Canada.

Please see the attachment: this is my eParrot with wing (~580 sq.in) covered by a single layer of 1.5 mil. Doculam only.
Contrary to M-cote, U-cote and other popular R/C style "cotes", Doculam is lighter, adds some torsional and bending stiffness to the wing and never goes slack or wrinkle on hot summer days. My only concern is long term durability.

At this moment, nobody on this forum can tell me from his own experience if a single layer of 1.5 mil. Doculam will survive, say, 200 pattern flights using the model with medium or large wing.

Have you guys noticed any air bubbles underneath U-cote, lamination film or/and SLC after ironing it on top of the Jap. tissue?

I would love to use medium colored Silkspan on my next large (700 sq. in.) wing and iron Doculam on top of it for shine and additional strength but I am concerned that pockets of trapped air may look ugly.

Perhaps the Jap.tissue, Silkspan and, say, Polyspan retain enough porosity after doping them to balsa and in the open cells area that the air can escape "into the wing" while the M-cote, U-cote, SLC and such are being ironed?

Your comments will be appreciated,
Matt

Offline Brent Williams

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #5 on: November 22, 2017, 08:16:49 PM »
Have you guys noticed any air bubbles underneath U-cote, lamination film or/and SLC after ironing it on top of the Jap. tissue?

Matt

It can look ugly and yield trapped air bubbles if, (edited: especially if the paper or other substrate is sealed with dope, oil based/water based poly-u, ect) you try to apply the lamination film traditionally like you would with monokote.  If it's sealed, you will likely need to start in the middle of the wing somewhere along a rib and work your way out/in.  Work one bay at a time, don't backtrack and it will come out looking ok.  Keep a pin handy, though as the eventual bubble is inevitable.   Wingtips take some practice with this film and it might require a few cuts to make the turns, but you can do most shapes with one piece (and a few slits.) 

If you look close at this picture, you can see how it turned out for me.  It looks fine, but I could probably produce better results now that I have experience.
« Last Edit: December 27, 2017, 05:07:06 AM by Brent Williams »
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Offline john e. holliday

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #6 on: November 22, 2017, 08:37:43 PM »
The covering under the mylar is only put down at the perimeter.   I have had no bubbles working from the edges to the middle.   Now if the covering is sealed before the mylar you will have problems.  On one of my planes the color under the mylar is poly-ester cloth from the fabric store.    Before and after mylar.
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
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Online rich gorrill

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #7 on: January 08, 2018, 03:08:57 PM »
Not to sound to uninformed,but what the heck is Doculam and where do you get it?

Rich

Offline Mark Mc

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #8 on: January 08, 2018, 05:16:09 PM »
Stuff like this:

https://www.amazon.com/TruLam-Standard-500-Feet-Laminating-01-275-1C/dp/B00KW8IY8U/ref=sr_1_3?ie=UTF8&qid=1515456435&sr=8-3&keywords=1.5+mil+laminating+film

You can get it cheaper from other places, this is just a quick example I pulled up.  Use it more or less like any other iron on film.  Doesn't shrink as much, but after you get used to working with it, it's a cheap alternative to the 'Cotes.  And it might seem expensive at $43, but you're getting 1,000 feet!  Doculam is a trade name for one manufacturer, but people use it for almost any laminating film.  Kinda like Xerox is used generically for all copying. 

Mark

Online rich gorrill

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Re: Japanese Tissue with Transparent Ultracote over it
« Reply #9 on: January 09, 2018, 09:09:31 AM »
thx for the info Mark

Offline john e. holliday

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I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530


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