Is all about science.

hello good people, this is an important massage from Mr. Antone alene , he is a very good friend of mine in the US, who help in shearing knowledge to the young engineers, here is base on rc aerodinamics, how to make foam Stiffen and strong, like hobbies in the usa...

Here is additional recommendation: -Since that foam is so crumbly & weak, try slicing it in 1/2 AGAIN(..those panels you use for the fuselage sides-->cut them 1/2 as thick again..)--so they are only 1/4 thick. Of course it will be immediately weaker, but then cover with wet paper + glue...and press these thinned foam panels BACK together again...creating a laminate sandwich with paper in between. Allow to dry in a warm place beneath weighted books. Your strength/integrity of the foam will increase tremendously. If you have a hot wire cutter table..that you can slide whole sheets of foam beneath...you can repeat this with even thinner foam sliced sheets. The MORE layers of paper you can laminate in-between, the STRONGER & more durable your foam panels--similar to Flite Test DTFB. There will be a weight increase, but not much or crazy--far less than adding packing tape for the amount of strength you gain in return. -As an alternative to sandwiching paper, if you can get the palm branches, reeds and dried leaves--shave them very thin & uniform...into sticks & rods as fine as you can & long as you can neatly. Make slices along the full length of your foam panels, about 1/2-way deep into your styrofoam-- then insert these sticks, rods & flat leafs full length with white glue. They will act as 'rebar'--just like inside poured concrete. Apply a paper covering on the outside and you should still have valuable strength//stiffness gains with little weight penalty. -If you can obtain tan-colored 'wood glue' instead of white glue--use that! Much better for stiff construction. To make your white glue somewhat stiffer when it dries, there are 2 additives which will help. a ) See if you can get the dry, white powdered clothing starch...the kind you mix w/cold water & spray on a cotton dress shirt--to make ironed creases and stiff collars for church wear. It will add a slight element of this same stiff character to your papers and things assembled from white glue. b)If you can obtain a bag of saw dust...or use some saw, drill or grinding tool to make your own out of scrap wood---create a large amount enough to fill a plastic shopping bag at least 1/2 full. Then....obtain a fine, mesh screen--either mosquito netting or window insect mesh will do. OR-- the type of metal 'flour sifter' that women use when baking bread & pastries...to shake their flour through BEFORE mixing with eggs, oil, etc... The flour granules will sort out thru the fine wire, yielding ONLY the 'finest' part and the lumps & grit behind. Well--do the SAME with your sawdust; keeping the finest dust granules behind in your bag or jar! Mix this very fine sifted sawdust with your water-thinned white glue that you apply to ALL your foam panels while you are adding paper to its surfaces. Your completed foam panels will AGAIN be far stiffer and have a harder surface. This white glue + fine sawdust can be applied as reinforcement 'putty/paste' in other areas of your construction. These steps are additional 'preparation work' and take some time, but if you pre- treat many foam panels with these methods ahead of time, your supply of 'build ready material' will be available for each new project or repair

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https://www.youtube.com/watch?v=LV0RNGVKirU

this will explain the more,. make out worm water not too hot, mix it with topbound or an water gum, apply same gum on the form, after 15minutes on water, bring it out and rap the foam, and stiffen the fragile foam, watch the video.


https://www.youtube.com/watch?v=XtmWk1f9X8M