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OK so seeing as I have finished my 1/3 Stearman I might as well get a start on my 113" super chipmunk . I will be using the Valach 120 boxer twin for power .. was not planing on starting the kit until this fall but seeing as it won't stop snowing up here I might as well make use of my time . This is one massive box of wood that builds a massive Chipmunk . The kit was cut by National Balsa and while the wood looks very good I don't think they know what a lightening hole is, all the parts are just big slabs . First thing is to lay out the sides and mark out the lightening holes and cut them out with the router . The sides are 3 layers thick for 1/2 the length of the plane so this alone will save a ton of weight ..