by Lemicha » Sun Jul 01, 2012 4:59 am
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26th June 2012
1 I have rubbed the gravel over a bit with my hands separating the larger pieces from it to use it for gravel at the base of the wall. It has been raining on and off so it is still too sticky to work with yet.
2 In this picture I have come back after an hour or so. The mixture is already setting and drying. The day is cold but the sunshine heating the metal of the wheelbarrow is making the process faster. This was from my first mix. I mixed this into my next batch… You can see the dryer parts as light grey/ off white coloured.
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27th June 2012
3 & 4 By pressing my finger into it, shows me the ratio of sand, clay and sawdust in the mixture. It also shows me how fast it dries. It also shows how it is already keeping to its shape/structure, yet still able to be shaped…just…without crumbling.
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27th June 2012
5 & 6 I’m experimenting with the different mixes. These are base layers that include a lot of sawdust for burning out and leaving air-pockets. And if they don’t burn out then they will dry and shrink as the water leaves and again leave air-pockets. Either way it should work. This whole area inside the bench is going to be coated in a mixture with a very high sand content. I am hoping that this hardens and changes form with heat added to create a texture akin to fireclay/fire bricks. I have thought of coating the bottom with sand and laying hot coals or building a hot fire within the cavity to ‘fire’ the coating to make it harder.
Whether I end up doing the whole cavity this way or just the burn area…I’ll decide that when I get to it.
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27th June 2012
7 A couple of different mixes here... It goes on fast once you get going. I am standing near the wheelbarrow load and taking handfuls and throwing it at the rocks. This way the force is pushing the mixture into all the little crevices.
8 Shrinkage from previous mixture drying and pulling away from the rock.
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27th June 2012
9 Not as much shrinkage here...
10 Looking down...
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11 My first mix is drying and looking really nice. I've started to place some flat sided rocks inside the bench to guide the airflow around...
12 Its coming together...from here you can see how far away I am throwing the handfuls from...I decided to leave the surface rough so the next layer will attach better.
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27th June 2012
13 The next batch I made in my cement mixer. I have got to say that you can make it much faster this way and its much easier to make a larger batch. I pat it down, unfortunately I worked rather fast as my time was running out. (My little one would be awake soon and my time would be taken elsewhere) I am kicking myself at not taking more progress pictures. To finish for the day I poked my fingers all over so the next layer would hold with no problems.
14 As you can see the base bulges more. It wasn't due to the weight of the cob. I made it this way to setup the next stage. This gives me a more solid base to work on.
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27th June 2012
15 You can see the curve better in this picture. Also the areas divided...I'm still ticking on how it will go. In regards to the central wall within the bench, I don't know if I will have the rock bare or covered over. Probably covered...
16 And the view inside at a different angle.
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17 You can see the real thickness here...
18 A closer look!
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27th June 2012
19 & 20 Different views to see the shape and structure, plus the surrounding garden.
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21 & 22 Taking a few steps back to show more. As the design forms and comes together, I am mindful of what I want to see in the garden and what I do and dont want obscured from view.
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Dream like a child...Plan like an adult