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wing fillets, how to?

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Old 10-18-2006, 03:58 PM
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WhiteRook
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Default wing fillets, how to?

whats the best way to make some wing fillets?

thanks
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Old 10-18-2006, 04:13 PM
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Default RE: wing fillets, how to?

It depends on how big you want them.

If you are refferring to just a small wing fillet for a sport plane, the best way I have found is to make a template from 1/32" ply. glue it to the Fuse side near the wing saddle (With the wing in place and waxed paper between so you don't glue it to the wing).

Then add a balsa triangle to any large areas. Sand it down if need be.

Now get some wood filler of your choice (I like Elmer's) and fill the area

Then, while the filler is still wet, get a wet spoon and smear it from front to back to smooth out the filler
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Old 10-18-2006, 05:45 PM
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Default RE: wing fillets, how to?

Now how do you get a good covering job over it. I hate inside curves!

Bedford
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Old 10-18-2006, 07:06 PM
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Default RE: wing fillets, how to?

Use Sig Koverall, and dope. Inside/outside/compound curves are a breeze. See below.

Bill, AMA 4720
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Old 10-18-2006, 07:31 PM
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Default RE: wing fillets, how to?

That's cheating!
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Old 10-18-2006, 09:50 PM
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Default RE: wing fillets, how to?

MinnFlyer explanation is right and for covering I use Blasa Rite, I beleive it comes for fabric or film and the use the top side of your iron or a trim iron followed with a cool damp rag to push it down. I use this all the time a its never come lose. you can do it with a heat gun to, just wear a glove so you don't burn your hand.
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Old 10-19-2006, 01:34 PM
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Default RE: wing fillets, how to?

I have made great fillets out of file folder cardboard; Cut and try till you have a good pattern, cut two for each side a bit oversize, glue them together with weldbond glue and form the convex with your fingers. It will set fast so you must move quickly. Didn't work? Try another one. You can make a base of 1/64 ply or leave it open. When dry trim carefully to fit. I glue it to the fuse with thin CA while holding it firmly against the wing and fuse. Put wax paper over the wing first to avoid accidents. You can re-enforce the bottom with shaped balsa triangles. I also cover them with Koverall while covering the fuse except I hold the Koverall with water based poly. I spray the outside of the fillet with mineral base poly before gluing on so the water poly will not cause warps. Works for me.
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Old 10-19-2006, 04:50 PM
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Default RE: wing fillets, how to?

Nuh, unh. It ain't cheating neither. It works real good.

Bill, AMA 4720
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