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Model Forum / Radio Controlled / Air Models / March 2004Painting info please
I seem to recall that there was a recent discussion in this forum about the use of dope plus talcum powder for a sanding sealer, but can't seem to track down the discussion. I'm trying to fill the weave of Koverall with clear dope. After 4 coats, I still haven't succeeded. A fellow modeler in our club said he'd used dope plus talc but couldn't remember how much talc to mix with the dope. I'd appreciate advice in that regard from anyone who has used the dope/talcum powder formulation. Thanx in advance for your help. Jerry  SignatureJerome A. Westphal >the >use of dope plus talcum powder for a sanding sealer, When I was doing control line, in my MUCH younger days, I used talc with clear dope for a sealer. Don't let it get too thick or it will be a brush-out nightmare. You can buy sanding sealer dope, you know. :) Dr.1 Driver "There's a Hun in the sun!" I have just filled the weave on some koverall with "Permafil" a plaster type readymix filler. If you add water to make a thick slurry then it paints on ok and sands off easy. Dope the fabric first to seal it and sand lightly before putting on the filler. A coat of thin dope seals it ready for painting' Ian > >the > >use of dope plus talcum powder for a sanding sealer, [quoted text clipped - 4 lines] > Dr.1 Driver > "There's a Hun in the sun!" The formula is 5 parts clear dope to 1 part Talcum (baby powder). Apply and sand off then apply again and sand off ad nauseam until all the holes in the weave are filled. Then apply several coats of a finishing resin and sand smooth. > I have just filled the weave on some koverall with "Permafil" a plaster type > readymix filler. If you add water to make a thick slurry then it paints on [quoted text clipped - 12 lines] > > Dr.1 Driver > > "There's a Hun in the sun!" >I seem to recall that there was a recent discussion in this forum about the use of dope plus talcum powder for a sanding sealer, but can't seem to track down the discussion. I'm trying to fill the weave of Koverall with clear dope. After 4 coats, I still haven't succeeded. A fellow modeler in our club said he'd used dope plus talc but couldn't remember how much talc to >mix with the dope. I'd appreciate advice in that regard from anyone who has used the dope/talcum powder formulation. >Thanx in advance for your help. >Jerry I usually use around 3 or 4 parts unscented talc to one part dope. The real key is mix it very thoroughly. Put on a coat or two, sand lightly, repeat. You will find after a few coats the finish is completly filled. Add a few more and your color finish will look like glass and be very smooth. Take your time and check your work as you go. There is nothing like a good paint finish that some will swear is a film covering. rick markel My Model Aircraft Home Page http://hometown.aol.com/aileron37/index.html Rick, 3-4 parts talc to one part dope? Are you sure you don't have that reversed? Chuck > >I seem to recall that there was a recent discussion in this forum about the > use of dope plus talcum powder for a sanding sealer, but can't seem to track [quoted text clipped - 17 lines] > My Model Aircraft Home Page > http://hometown.aol.com/aileron37/index.html >Rick, > >3-4 parts talc to one part dope? Are you sure you don't have that reversed? > >Chuck LOL, your right Chuck, brain fart on my part. Thanks for pointing it out. rick markel Don't you guys read the responses??? Its 5:1 in favour of "dope". No offense intended. > Rick, > [quoted text clipped - 33 lines] > > My Model Aircraft Home Page > > http://hometown.aol.com/aileron37/index.html Thanx all for your input. Regards, Jerry > I seem to recall that there was a recent discussion in this forum about the > use of dope plus talcum powder for a sanding sealer, but can't seem to track [quoted text clipped - 6 lines] > Thanx in advance for your help. > Jerry I never measured. How much you use depends on how thick you want it and how many times you plan to sand. If you are brushing it on, and you use too much, the result may be streaky. If you use too little, then you might have to apply another coat and sand again. I just add talc until the viscosity is like thin syrup. Jim - AMA 501383 (remove NOSPAM to reply) > I seem to recall that there was a recent discussion in this forum > about the use of dope plus talcum powder for a sanding sealer, but [quoted text clipped - 6 lines] > > Thanx in advance for your help. Jerry Microballoons are a lot easier to use and lighter since they are mostly air. Mix enough so that you start to notice the change in consistency and then just a little more. The mixture will be nearly opaque. > I never measured. How much you use depends on how thick you want it and > how many times you plan to sand. If you are brushing it on, and you use [quoted text clipped - 14 lines] > > > > Thanx in advance for your help. Jerry |
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