09-23-2018, 05:26 PM
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#31 (permalink)
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Nothing you can't accomplish with sanding, putty, and fabric overlay. 1/32 to 1/16 aircraft ply is really malleable after it sat in your swimmimg pool overnight.
Those old timers were skilled with wood structure
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09-24-2018, 12:05 AM
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#32 (permalink)
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You could never get there with coroplast. 
Howard Hughes made these the same way as the 'Spruce' Goose. aerohead is a fan of reinforced concrete forms.
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Last edited by freebeard; 09-24-2018 at 12:11 AM..
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09-25-2018, 10:14 AM
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#33 (permalink)
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You are saying the skins are built up in layers? Coroplast does heat soften
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09-25-2018, 11:45 AM
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#34 (permalink)
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The dinghy and this display case are under the wing of the Spruce Goose in the Evergreen museum (last I checked). I don't know the technique, possibly vacuum bagging like carbon fiber. The result is essentially compound curved plywood. No sanding or putty.
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09-26-2018, 10:52 AM
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#35 (permalink)
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compound
Quote:
Originally Posted by freebeard
The dinghy and this display case are under the wing of the Spruce Goose in the Evergreen museum (last I checked). I don't know the technique, possibly vacuum bagging like carbon fiber. The result is essentially compound curved plywood. No sanding or putty.
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The fuselage of the DeHavilland Mosquito was formed from streamed strips of wood and adhesive,laid up inside a concrete mold, with a balloon at the center,which forced all the loose plies against the mold until the glue went off.It made a beautiful,lightweight,composite,compound skin.Very cool!
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09-27-2018, 10:09 AM
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#36 (permalink)
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Clingenpeel told me how they made the Hercules wings, but I was young and didnt pay close attention. I do recall they were built, installed then covered. I suspected a combo of vacuum bagging and sandbags. Really hard to seal the underside.
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09-28-2018, 02:02 PM
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#37 (permalink)
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Quote:
Originally Posted by aerohead
The fuselage of the DeHavilland Mosquito was formed from streamed strips of wood and adhesive,laid up inside a concrete mold, with a balloon at the center,which forced all the loose plies against the mold until the glue went off.
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In OZ they made them on the outside of concrete plugs, then strapped the wood down.
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