The answer depends on what you intend to build. Balsa is a very lightweight but flimsy material that is good for building model airplanes, among other things, but may not be useful if you intend on using it for any type of load-bearing.
(The layer that is melted material inner core, the inner core can melt iron & nickel.)
Invar can be used as magnetic core material, but there are better choices. Invar is alloyed for its thermal stability. It is iron with a good percentage of nickel. Remember that magnetic core material is usually laminated or is "powdered" in a way to electrically isolate the "bits" of core material so eddy currents will be reduced. A link is posted to the article on Invar put up by our friends at Wikipedia, where knowledge is free.
No. Material cannot travel from the core to the crust.
The inner core is made of nickel and iron.
Balsa Wood is used for model making. Commented by .Dp.
Corecell is a structural material superior to balsa. I am putting it in my boat as have had enough of rot issues. It will not absorb as much resin and will be a lighter install with even more strength according to manufacturer. Corecell m is the latest stuff.
No, it isn't. Sorry! You can use the wood from Hom Stores though.
Balsa wood is a timber.
balsa tree trunks
i like to use balsa for fins; paper tubes for the body and balsa or plastic for the nose.
Thor Heyerdahl's raft, named Kon-Tiki, was made from balsa wood logs lashed together with hemp rope. The raft was primarily constructed using traditional Peruvian techniques to replicate the ancient vessels that were believed to have been used by pre-Columbian South American civilizations.
Balsa is soft and workable. Good for carving. Lightweight as well.
Balsa wood is extremely light in weight, which is why it is used for the construction of model airplanes, but it's also a bit pricey, which would rule it out as raft material for most people. However, a Balsa wood raft would be very strong, and due to it's light weight, it would be extremely easy to carry overland when bypassing waterfalls or rapids too dangerous to run through. (This is called a "Portage" by we canoeists and Kyakers.) If ya have the money, go for it !
Different varieties of balsa and different parts of the same tree have different densities. Values between 0,12 and 0,36 can be found from various sources. (Weight) Mass = Density * Volume Just like silver or chopped liver, you can get a bundle of balsa wood that weighs as much or as little as you want.
Made out of wood and glue.
Yes, Titebond 3 or 2 are both excellent for balsa wood.
Balsa wood is natural it comes from the Balsa tree