>>
>> ............... if sprayed more than about 0.25" thick, will never
harden. ...............
>>
I made the foam base of our Fuselage Bogie by covering the underside of the
fuselage with plastic bin liner, making a frame round it with cardboard
above a plywood base, and injecting the expanding foam into the cavity.
It was 6 inches thick in places and worked OK. It formed a perfect
cradle to the exact contours of the underside.
Looks as though it depends on the make - - - - - - try a test first.
The stuff I used expanded from a liquid 'grape' to a foam 'grape fruit'
in about half an hour. When cut in half it was a uniform solid foam
consistency all the way through. It can exert quite a force, however, if
it has nowhere to go.
Ted
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