Margaret's sketch of weight inside chimney to offset opening lid
counterweight coming out from its formwork
counterweight to be fit inside chimney - 22kg
pulley for counterweight cable
pulley fixed to pipe
template for top front steel plate
steel brackets to locate chimney within lid:
holes drilled for steel plates
bearings in place around chimney
timber & steel lid to chimney connection
Jesse & Charlie fixing weight below to be fit into chimney
cable through pulley at top
cable through internal connection to lid
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