Discussion in 'Other Toys/Hobbies' started by Builds By Baz, Jul 14, 2012.
Got a heap more bows on the revolving dome and cross-bars on the slot.
loving the work.
Keep it up
Finally got the last of the heavy bows on the roof. I've been at it for roughly two hours every afternoon after work until I run out of light. I've even come home at lunch times to get 30 minutes of labour in at times. Time is so precious.
The next step is to roll-form some lighter intermediate bows. Flat sheet to cover the dome will bend nicely one way, but not two ways, so trying to bend it over the large area between these heavy bows is likely to warp and distort them too much. Putting in some intermediate bows will mean thinner strips of sheet, reducing the need to bend them two ways.
One of the hurdles I've had to overcome is that the old pier is not high enough to mount the telescope on, as the new floor level is now much higher.
To solve this, I have built another wooden box like the one underneath, to be filled with reinforcing mesh along with some conduit to run electrical cabling. It will then be filled with concrete.
Full story here
1. Constructing the form-work for the new pier.
2. Form-work in position on top of old pier.
3. New pier extension topside.
4. While I was at it, I skinned the door with thick steel sheet.
The race was on today as the rolled steel arrived to build the dome's sliding doors and complete the intermediate dome ribs. I say, "race" because tomorrow afternoon I have a professional welder coming over to weld stuff together.
This afternoon I measured, cut and joined all the framing together for the sliding doors. I have used 20mm steel plate to join it all together with screws, that way the welder can just weld all the joints together, then I can remove the ugly plates and screws.
Below: Picture 1 - One side complete. Picture 2 - The two halves will split sideways to open the dome slot.
My welder friend gave his valuable time and skills tonight to weld up the door-frames as planned. They are extremely rigid and strong now. Great job mate.
Putting up all the intermediate dome ribs was so much quicker than the heavy ones. I got a couple done yesterday at lunchtime, a couple more in the afternoon, a couple more today at lunch time and the rest done this evening. I even had time to paint the door with primer.
Below: All bows up, ready to be welded in place and then the temporary joining brackets can be removed and the roofing can go on.
Full story here >>> http://www.asignobservatoryii.com/observatoryconstruction.htm
I've been trying to work out how to get the doors on top of the dome to slide sideways, without leaving protrusions outside the dome when it is closed. My uncle came up with a solve consisting of four bearing-slide-rails from industrial sized photocopier paper trays. I now have them and they look and feel like they will do the job nicely. I'll put pictures on the website when I have them figured out.
Today I got my welder friend Jacob to come over and weld all the ribs on the dome, so I can take off the cumbersome steel plates holding them on. Now I can start getting some sheeting on the roof and seal it all up.
I've bought some cement and hopefully this week I can mix enough concrete to fill the central pier extension. With that in place, the telescope can be mounted as soon as the roof is on and operations can begin! All the prettying up on the inside will follow, but at least I can start to use it.
My next-door-neighbor is a carpenter and has volunteered to help me build the stairs inside. Actually, he is the expert, so I think it is me who will be helping him!
I don't know how many times I have leaned on the unattached pier up on the top floor and nearly toppled over, so today I filled it with concrete and mounted the mounting plates.
Solid now and good to lean on!
1. Reo about to go in, pouring in concrete, then embedding the mounting plates deep into the wet concrete via three long threaded rods.
2. Filled with concrete and mounting base plates seated.
Mate thats awesome.
The steel for the roofing arrived today. Thanks to a couple of good jobs with the chainsaw and a wonderful donation. Along with the roof sheeting, I also got the doors custom covered.
Thanks to the help of my next door neighbour and his friend, we got all the flooring in on the first floor today. Getting the first sheet in took a little work, but once we got a flow happening, the rest went in so quickly. Now I have something to stand on while I put the roof on.
As soon as we were done, it poured with rain, but I've had two test-pieces up there for months and they are not yet swelling or deteriorating from all the weather. Hopefully, I'll have the roofing on within the week and won't have to worry about that any more.
1. Colorbond sheeting cut to size and ready to clad the dome.
2. Dome doors covered with colorbond sheeting.
3. Flooring installed.
Humble beginnings. This was my original cardboard concept I built all those months ago to get it right in my head during the planning stages.
A bit of mucking about today, finishing off the flooring, putting joiners underneath etc. Finally started on the roofing and got the first piece worked out. The four around the centre slot are the most complex, but once those are worked out, the rest are easy.
Today's work. Attaching the hardest sheets first. Each sheet has to be clamped, traced along the bows, removed, cut to shape, re-clamped then screwed on. Getting sheets to bend on two axis has proven difficult.
My back is stuffed!
Let it not be said that I have not spent blood on this observatory! Nearly dropped the door from the top of the dome today, caught it mid-slide but managed to run my forearm down the edge of the sheet-metal. Saved the door, lost some blood.
1. Interesting seeing the muscle under that many layers of skin.
2. Stitching it up, a couple more to go. Good as new and back to work!
Blood on the observation deck. - 1 Dec 2012
It's been an interesting week of fiddling about. I've been putting up some of the roof sheeting and finding it challenging. Not only because of the difficulty in handling such thin and cumbersome material, but at height making it all the more dangerous and time-consuming.
Full story and photos here >> http://www.asignobservatoryii.com/observatoryconstruction.htm
Here's a link to an animation of the doors opening and closing. http://www.asignobservatoryii.com/ASIGN_II_Doors_Opening.gif
1. Roof sheeting going on. Slowly filling in all the sky gaps!
2. About 1/4 of the roofing done.
1. Nearly half-way with the roof sheeting.
2. View through the slot from the far wall at telescope height to give an idea of where the horizon is in relation to a horizontal scope.
3. 3. View through the slot from directly above the pier, where the telescope will be mounted. No need for the slot opening to be any lower as all you will see it trees and oncoming cars from up the road.
Ten sheets to go!!! WOOT! Getting all excited!!
Looking great mate. Can't wait to see the final product
1. Four sheets to go!!
2. Doors closed. Weather skirt still to be fabricated and assembled between top of wall and bottom of dome.
3. Nearly fully enclosed.
4. Doors open showing floor space.