When most pilots think of building a model aircraft, balsa comes to mind. Foam is becoming a very popular building material of choice. Like balsa, foam is very affordable and easy to use. On November 12, 2015, we talked with Keith Sparks about how to build with foam. Listen to the podcast below.Recorded Podcast Building With FoamBy Keith “Sparky” Sparks — parkflyerplastics@att.netPhotos by the authorAs seen in the October 2015 issue of Model AviationThere are three types of foam construction: slab construction, sectional construction, and panel construction. In this edition of my three…