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Building Tips and technical articles. => Paint and finishing => Topic started by: Pat on August 30, 2012, 06:55:08 PM
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Hi all,
I have a question. Before covering a plane with SLC and then silkspan, etc. do you go the normal Nitrate dope(3 coats with sanding)?
Pat
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The area where the SLC will go does not need any dope to prepare it. I have one model in the stage where the SLC and silkspan is applied and another where it is ready for the SLC. Get on over here and see them! LL~ LL~
Sometime this weekend my oldest son is coming down to do some flying. We will have something for you to fly, too, if you are here at that time.
BIG Bear
RNMM/AMM
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Just have your sanding done as much as possible. Then clean all the dust off. Then put down the SLC. If you put something over it, get a Scotch Brite Pad and go over the SLC to knock the sheen off.
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I don't use anything either, and it always works great. H^^
Marcud
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Hello Pat,
When I am going to apply silk over SLC, I do the same as John Holliday whith Scotch Brite Pad or 600 sandpaper, but apply 2 or 3 nitrate dope coats over SLC before the silkspan.
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My question is a bit off the path, but I have huge roll of the stuff that is years old. Can anyone tell me the shelf life of it as far as the stickum goes?
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Brother Will............ you and I both know just how easy it would be to find out! ;D
BIG Bear
RNMM/AMM
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Yea coach, but that would mean I have to build something! The current build is slated for coverite, and the "other" current build is slated for nitro-cellulose lacquer and light strings.
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Yea coach, but that would mean I have to build something! The current build is slated for coverite, and the "other" current build is slated for nitro-cellulose lacquer and light strings.
Brother Will,
A scrap of the SLC and a scrap of balsa...... this is just a test, in case of a real emergency.......
Hey, another guitar ready to finish?
BIG Bear
RNMM/AMM
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A guitar covered with Coverite? Oh, no... ;) Steve
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Nah Steve, I'm afraid the coverite goes on the Pawnee. Actually,coach, the guitar is done as of today. My new personal model, and believe it or not, built for lightness!!! Weighs just 6 pounds with the strap. Now if the Pawnee can end up at least that light! ~^
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My question is a bit off the path, but I have huge roll of the stuff that is years old. Can anyone tell me the shelf life of it as far as the stickum goes?
Will, the life of the stickum should be pretty much forever. It is a solid plastic, so it won't dry out or anything. The surface of the film is treated to promote paint/ink adhesion. If the covering is rolled tight it will protect the surface. If the surface is open to the air for a couple of years it may lose some adhesion, but the buffing with green Scotchbright(doesn't really have to be buffed dull) will keep the paint stuck on.
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Phil,
How do I order? Can I do it on the phone? I looked at your site but couldn't tell if I could order online.
Pat
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Hey, thanks Phil! This is the roll I got from you a very long time back. Found I couldn't handle the combat wars any more, so still have all but two airplanes worth left! I loved using it for that back then!
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Hey, thanks Phil! This is the roll I got from you a very long time back. Found I couldn't handle the combat wars any more, so still have all but two airplanes worth left! I loved using it for that back then!
Brother Will,
I am now using SLC over the open bays then covering with silkspan on all my "large" planes. It seems to really help cut down some of the clear needed to fill the silkspan and makes it MUCH more puncture resistant. I haven't noted a big gain in weight.
"Coach"
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After a friend showed me SLC, I haven't used anything else.
Like Bill said, it gets bullet-proof!!
Marcus
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Have a few questions concerning using SLC covering. Plan to try this on a foam wing profile sport model.
The SLC wing covering process as I see it;
Block sand the foam & two light filler coats
SLC cover & buff with ScotchBrite to remove 'sheen'
Silkspan 00, two layers down with polycrylic.
sand lightly
Paint with whatever
OK what exactly is the "Light Filler Coats" directly on the foam?
And does the 00 Silkspan have to go down with Polycrilic or can I use Nitrate Dope?
Wood Surfaces (Fuse, tail)
Finish Sand
Polycrilic ?
SLC (buff etc)
00 Silkspan? With polycrlic or Nitrate?
Sand and paint to suit
We are not talking 'front row' finish here, just robust and looking nice.
Anyone have any thoughts?
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Hi Vince,
I use Nitrate to attach the silkspan to the SLC. I did find that I needed to shrink the SLC the next day after I applied it and before I put on the silkspan. I build in a basement workshop which is not quite as controlled as the upper house so that could have been the reason.
I really like it on large (56"-60" WS) stunters as a "base" for the silkspan on the Open Bay wings. I have even used it on a "Kept Foam" Dixon foam wing. Seems to take less dope to seal the silkspan.
Bill
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Back to the drawing board.... I finally got my Olympic painted, and when I started pulling the masking tape, HUGE sheets of silkspan pulled off the slc covered wings. I scuffed the SLC so I don't know exactly what happned.
Pat