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Some plans
I've mounted the G-11 on the pier to work out wall/roof heights.... decided on 1750mm high walls. The scope will see everything worth looking at with this height, and with the height of the castors, will give an internal closed roof ceiling height of 1850mm.... no thumped foreheads for us.
The gable roof rafters are going to be fashioned from 190x35 pine, cut with a 5deg pitch - a more expensive, and slightly heavier approach, but easier for me to keep square etc, and will be very sturdy. A layer of 9mm ply over the rafters to dust proof the roof, then corrugated iron over this for protection.
I am going to run castors directly on the wall top plates, with the overlapping roof-sides sheeting stopping lateral movement. The roof will be secured down with bolts through the wall top plate/roof bottom plates, or with turnbuckles.
Just need some sunshine now....
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