09-16-2020, 01:08 PM
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Scale Modeler Extrodinare
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Join Date: Feb 2018
Location: Everett, WA
Posts: 404
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Quote:
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Originally Posted by LeeR
If you soak the balsa in water, it is bendable. Probably easiest to make a form to press the fins against, for uniformity. They need to be held in place for at least 24 hours. I seem to recall hearing that ammonia added to the water aids in bending.
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Apogee uses that technique for the blades on the helocopter recovery kits - and yes some ammonia added to the water helps. Just moisten the fins then used something to hold them to the mold form until they dry (I wrapped them with an ace bandage).
If you go here:
https://www.apogeerockets.com/Rocke...er?cPath=1_307&
Tim VM has video's showing how to do it (it's down the page a bit). |