Buzzing after a weekend workshop are members of the Central Otago Model Society.
Society president Rex Johnson said experts from within the group, as well as invited members from clubs in Dunedin and Invercargill, shared skills including how to put decals on to aeroplane wings and creating realistic layers of paint on models of people.
Sharing "years of experience" made the workshops very enjoyable, he said.
Even a "simple slide of a decal on to an aeroplane wing" was the work of many years of trial and error to ensure it could be perfectly positioned.
"Everybody has their specialist skills and it is just fascinating watching an expert talk about their subject."
The group worked on model aircraft, tanks and ships as well as model railroads, Mr Johnson said.
The group normally hosted a model train show in combination with the Alexandra Blossom Festival, but this year it was hosting the International Plastic Modellers Society South Island Championships.
Models of the highest level of construction would be part of the display at Alexandra Community House, in Centennial Ave, during the blossom festival, Mr Johnson said.