Sandwich techinique on building wings
05-27-2003, 11:11 AM
#1
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Sandwich techinique on building wings
Hi guys,
I`d like to know if there`s someone who`s ever built a sandwiched wing using foam and some composite material covering the foam.
Please send me some tips about this building techinique.
I`d like to know if there`s someone who`s ever built a sandwiched wing using foam and some composite material covering the foam.
Please send me some tips about this building techinique.
05-27-2003, 08:49 PM
#3
Sandwich techinique on building wings
It's a pretty simple process... the key is to use just enough resin to wet the cloth.
The old-fashioned way is to smooth the fiberglass (or other cloth over the bottom of your wing panel... people also use anything from polyester fabric to brown paper to kevlar or carbon fiber cloth or mat), then mix up some epoxy (no polyester: polyester eats styrene foam)... drizzle the epoxy onto an area and squegee it out as far as you can (squeegee with a playing card, a credit card, or a glazing sqeegee for autobody)... then let it dry, trim, and do the other side, wrapping over onto to bottom... fill the roughness of the weave with lightweight filler, and sand very smooth.
The new-fashioned way is to apply the cloth to a mylar sheet, add some other neat stuff, and vacuum bag it all to get an really nice finish... I don't want to go into the details because you can just look them up on the web by searching for "vacuum bagging"
Is this what you're looking to learn about?
The old-fashioned way is to smooth the fiberglass (or other cloth over the bottom of your wing panel... people also use anything from polyester fabric to brown paper to kevlar or carbon fiber cloth or mat), then mix up some epoxy (no polyester: polyester eats styrene foam)... drizzle the epoxy onto an area and squegee it out as far as you can (squeegee with a playing card, a credit card, or a glazing sqeegee for autobody)... then let it dry, trim, and do the other side, wrapping over onto to bottom... fill the roughness of the weave with lightweight filler, and sand very smooth.
The new-fashioned way is to apply the cloth to a mylar sheet, add some other neat stuff, and vacuum bag it all to get an really nice finish... I don't want to go into the details because you can just look them up on the web by searching for "vacuum bagging"
Is this what you're looking to learn about?
