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Building Tips and technical articles. => Paint and finishing => Topic started by: Bootlegger on November 30, 2010, 12:00:54 PM

Title: filler
Post by: Bootlegger on November 30, 2010, 12:00:54 PM

I am building an O/T stuntship and the tail surfaces are 1/8" balsa, I don't want to have it looking like a pretzel by using dope.
 I am thinking about poly crylic instead.
 I plan to coat one end top and bottom, and when dry do the same to the other end. When dry put the second coat on, then spray primer on to seal the wood better.
 Does any one have a better idea?
 Thanks, Gil  y1

Title: Re: filler
Post by: Mark Scarborough on November 30, 2010, 01:09:00 PM

I would use epoxy, Poly is water based and still could lead to warping the thin control surfaces IMHO

Title: Re: filler
Post by: Tim Wescott on November 30, 2010, 01:51:58 PM

I've built a lot of solid-balsa 1/2-A ships, with 1/8" thick for the wings and non-tautening dope for finish.  I haven't had a problem with warping.

I wouldn't use content-weight wood for the stab, though, unless the plane is pretty darn small.

Title: Re: filler
Post by: Don Hutchinson AMA5402 on November 30, 2010, 05:16:27 PM

Go with the dope but put some of the Flex-All in it.
Don

Title: Re: filler
Post by: Ward Van Duzer on December 01, 2010, 09:17:07 AM

Use firm, (not rock hard) C-Grain wood...No problemo

Built 3 El Diablo elevators this way. Nary a warp!

W.

Title: Re: filler
Post by: Bootlegger on December 01, 2010, 04:14:56 PM

   Thank ya' guy's, I knew that the answer's would be here.  Thank's again... #^