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Tuesday: A horribly wet and windy day mostly spent reorganizing the shed and browsing.
My 40-80cm drawer slides have turned up. After much searching I was to confirm all the details about them online. Ram Industrie of Italy and their "Standard" Series 083[400] with a 120kg load rating. This rating refers to a pair of runners with evenly spread load in a drawer. They seem very heavily built, full extension and of the correct dimensions. Ram has many, short, YT demonstration videos and make a huge range of slides! They have buffers to reduce shocks at closure and full extension. In the case of dome shutter doors the ply ribs of both the shutters and the observation slit contact each other. This provides a definite stop at each end of the shutter's travel.
These slides do not visibly dismantle as far as I can discover. There are no hidden levers, buttons or friction devices.Which means they will have to be fully extended to be fitted to the shutter "doors" from the inside first. Thence to the dome's 2x8 bottom rail from the outside. Otherwise it will be impossible to reach one, or the other set, of slide fixing screw holes.
It seems logical at this point not to cover the shutters with 4mm plywood until satisfied with the fixing and adjustment of the shutter doors. After that the shutter skeletons can be safely unscrewed from the bottom rail, taken down and clad in ply. Then finally returned to their place on the dome. Some propping may be useful during fitting trials depending on the weight of the individual doors. The top slides, just beyond the zenith will help to carry the weight if attached first. Though these will be the most difficult to reach through the top of the observation slit.
Now I need to think about arranging solid fixing surfaces in the shutter doors to take the slides. It seems sensible to use as many screws as can be fitted to each slide component. It has also occurred to me that I need to extend the shutters below the base ring. The present "bare midriff" at the roller level still has to be covered to seal the dome edges against the weather.
Now I need to think about arranging solid fixing surfaces in the shutter doors to take the slides. It seems sensible to use as many screws as can be fitted to each slide component. It has also occurred to me that I need to extend the shutters below the base ring. The present "bare midriff" at the roller level still has to be covered to seal the dome edges against the weather.
Click on any image for an enlargement.
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