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Step 5The Frame
Use heavily varnished hardwood, because the timber will be sitting in water for several months of the year. We used reclaimed elm and the frame still fits neatly together, well into its third year.
The attached drawings show the dimensions we used. The angle of the chutes is approximately 10 degrees and we added locating holes at 2 points for the pump. This allows the pump to be fitted in a lower position for younger children and a higher position for older ones. The frame design gives solid support to the chutes but also allows maximum access to the chutes during play. Two cross pieces hold the frame firmly into locating holes cut into the sides of the base and provide a flat platform for the final canal section of gutter to sit on.
To connect the two sides and provide a solid seating for the chutes we used M12 threaded shafts as shown. These were easy for us to have made in a local machine shop but simply using wooden dowel would do the same job, and would weigh less.
4 sets of M6 bolts with wing nuts are used to attach the cross pieces.
The attached drawings show the dimensions we used. The angle of the chutes is approximately 10 degrees and we added locating holes at 2 points for the pump. This allows the pump to be fitted in a lower position for younger children and a higher position for older ones. The frame design gives solid support to the chutes but also allows maximum access to the chutes during play. Two cross pieces hold the frame firmly into locating holes cut into the sides of the base and provide a flat platform for the final canal section of gutter to sit on.
To connect the two sides and provide a solid seating for the chutes we used M12 threaded shafts as shown. These were easy for us to have made in a local machine shop but simply using wooden dowel would do the same job, and would weigh less.
4 sets of M6 bolts with wing nuts are used to attach the cross pieces.
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