Foam Building-Part 1

This material called foam never ceases to amaze me,
you can use it virtually for all the types of planes, Gliders, Free-flight, and 3D models especially.
But there are certain drawbacks for foam too,

1.Useless for nitro models as Nitro fuel will eat foam.
2.CA can neither be used for foam building not for minor repairs.
3.Foam will Chip away or weaken sooner or later,
4.Sanding or cutting foam could cause lot of dust and its hazardous to health.
5. Availability of certain types like EPP is hard in certain parts of the world being there is no other practical usage of those materials in those areas

With all these being said, lets address those areas and speak about the advantages.