And some planes that use sheeted foam wings come with the cores pre-cut, some give you templates and others just plans. The buyer MUST know what he is getting. Sometimes additional parts are available for an additional fee. Landing gear, canopies, cowls, wing/tail cores, additional wood, etc. Wing Mfg was a big supplier of short kits at one time. Many of the laser cutting houses also provide them.

Advantage: You get to pick the quality and straightness of the wood.

Dis-advantage: You have to pick the quality and straightness of the wood. Not always an easy task.