Hi how do you get the fuel out of balsa which methods do you fellow modellers use ? I had a pin hole in my fuel tank and it has pumped fuel into my fuse and the landing gear supports have let go on the supports. Fuel was 15% nitro seemed to eat through the dope , maybe it was not thick enough. Thanking you Dean (outback OZ)
Use a match. Best if you do this outside ;-)
I've getting good results with the following routine when repairing a monokote job:
Clean well with alcohol, I use the 91% found in drugstores, then apply K2r and let set for several hours. Repeat the k2r as required until it' clean. To keep wood from soaking up oil, get some yellow carpenters glue and thin slightly with watet and brush it on the wood. I've used this method for 20+ years and have never had it fail. I Always use it to coat my firewall and surrounding areas. It's as good as, lighter than and cheaper than epoxy
Does it really work as well as epoxy? TIA, Andy
We can make a box of wood.....FLY!!
Dope is not fuel proof like other sealers. It is merely fuel resistant. That "hot fuel proof" that you used to see on the bottles (Pactra?) was referring to the exhause which had little alcohol or nitro left in the oily mess.
What is K2R? Can you get it in the UK or is there an equivalent?
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Dean, if you can't find K2R in Oz, you can make your own out of any solvent that will dissolve the oil and cornstarch. In the past, I've used denatured alcohol (ethanol made undrinkable), but probably acetone, MEK, or other organic solvent would work. Make a slurry of starch and solvent and paint it on the oily surface. Be careful, however, and do this in a well-ventilated area and wear gloves resistant to the solvent, as a lot of the stuff isn't good for your health. As the solvent dries, it carries the oil with it through the cornstarch, where it's trapped. Then, brush/vacuum/wipe the residue off. Repeat as necessary. when you've soaked up as much oil as you can, paint the surface with a sealer such as Balsarite. BTW, next time try painting your fuel tank area with thinned epoxy. It's definitely fuel proof!
Morris
Look for Fuller's Earth.
Use a heat gun in a WELL ventilated place. The oil is what is soake
into the wood the rest has already evaporated. The heat will draw ou the oil and soak it up with paper towel as you go(plus the heat dry the wood). THEN Epoxy thinned with alcohol will fuel proof it. Th suggestion of drilling a small hale is a good one as well. The woo will still appear to be stained but it will be dry and oil free so yo can cover it again
-- RCFlyer5
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