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  • November 17, 2017, 05:57:08 PM

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Author Topic: Lightest Finish  (Read 375 times)

Offline Motorman

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Lightest Finish
« on: November 12, 2017, 03:48:19 PM »
What's the lightest way to finish a fully sheeted foam wing? It's for electric and it doesn't have to look good just be protective of the wood and be light. I was thinking of park flier film but worried about it going down smooth.

MM
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Offline john e. holliday

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Re: Lightest Finish
« Reply #1 on: November 12, 2017, 05:57:39 PM »
Go to the Corehouse site.  I think Phil has a help there on do foam wings with SLC iron on covering.   Or you could look through these post and see the other coverings that have been used.  Even down in the carrier section Bill Bischoff show using white glue and silk span as well as the Corehouse on his stunt plane. 

When you get to the site click on the Giles notes.   It has a short note on finish.
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Online Brent Williams

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Re: Lightest Finish
« Reply #2 on: November 12, 2017, 07:31:16 PM »
DesignMaster Tint-It floral dye sprayed on the adhesive side of the film is very lightweight.  I used 1.3mil D&K lamination film.  The spray dye didn't seem to affect the adhesion of the film to the balsa.  I used this method on my Trailblazer plane. 

The yellow I used on this plane is (heavy) rustoleum.  There are definitely lighter color options and methods other than rustoleum. Dope, Klass Kote epoxy, Nelson/system3 would all have the potential be much lighter than the rusto paint.
« Last Edit: November 12, 2017, 08:45:09 PM by Brent Williams »
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Online Brent Williams

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Re: Lightest Finish
« Reply #3 on: November 13, 2017, 04:34:17 AM »
For a good tutorial on light, beautiful finishes, read Pete Peterson's article in the Jan/Feb 2009 Stunt News.

Pete is a master of the art.  His method of applying transparent finishes is extremely lightweight.

The finish on his Jamison Special was 3.8oz from the bare wood. 

https://pampa.bureaugravity.com/wp-content/uploads/2017/08/SN_Magazine_Jan_Feb_2009.pdf







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Offline Motorman

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Re: Lightest Finish
« Reply #4 on: November 13, 2017, 10:54:41 AM »
So, who has the best price on zinc stearate? What do you use for filler?

Thanks,
MM
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Offline Fredvon4

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Re: Lightest Finish
« Reply #5 on: November 13, 2017, 11:44:56 AM »
I get my ZS from Randy Smith...His is  a finer screened powder than the lumpy, grainy stuff I got off e-bay seller a decade ago

Randy's Tub of ZS goes a long way

I use a lot of Phil Cartier's SLC... light....very light and IMO pretty cheap

Hint for a fully sheeted wing... and Most super thin light shrinks....first look at Bobby Mear's (find him in the combat section) face book page and his use of shrink stuff

You can color the balsa sheet somewhat with Preval sprayers and water based craft paints for near zero weigh gain...will not be opaque
Then with SLC...or light Mil doculam do NOT do traditional perimeter glue/heat... start in the middle=== and heat/glue down working all the air to the perimeter


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Offline Motorman

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Re: Lightest Finish
« Reply #6 on: November 13, 2017, 12:26:37 PM »
Thanks Fred. If I go with film I like to use Coverite Microlite, .6 oz per yard and it comes in colors. From what I understand light balsa soaks up allot of dope so I don't know if I could beat that weight. On the other hand I've heard you have to fill the grain under a film finish anyway so might be just as easy to shoot a few color coats as iron on the film.

MM   
There will be a sunny day and we will fly our airplanes.


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