The GD18 basic kit consists of 103 separate triangles that need to be pre assembled into part pentagon and hexagon panels before covering and final assembly. Before pre assembly the triangle frames can be stained or undercoated if required.

The GD18 kit is made up from two basic triangles (not including the four door triangles) there are 30 short triangles that make pentagon panels and 69 taller ones that make up the hexagon panels. Sort the triangle into two separate piles ready for pre assembly. Important: Both the pentagon and hexagon triangles have two equal sides while it is easy to figure out on the shorter pentagon triangles care should be taken to stack the hexagon triangles. To assist with this all the triangles have a red mark showing the top (see diagram)

Begin by taking three hexagon panels, carefully join them together and hold with G-cramps or large mole grips before screwing securely from both sides with 40mm screws. Note: waterproof PVA glue can be used to permanently join these triangles. Be careful to align the triangles accurately and drive screws as closely as possible to the corners (you may need to put the corner screws in at a slight angle).

Work your way through all of the triangles joining them into part hexagon and part pentagon panels as shown in the diagram below, you should have 23 half hexagons 6 base pentagon panels (3 piece) and 6 top pent panels (2 piece). Now the frames are pre assembled and ready for covering.

Related pages:

GD18 Exploded view
GD18 Base assembly instructions
GD18 covering instructions - polythene
GD18 Overview