Holmz
Member
- Joined
- Oct 11, 2014
- Messages
- 4,001
In the 70's and 80's the evaporative "Swamp Coolers" were used a lot. Basically a mesh with water running down it and a bog fan sucking air through the mesh, which cooled the air via evaporation.
They do not work when it is humid.
Anyhow the boss wanted a cover it with some limestone mosaic sheets of tiles...
And hence I put a frame of 2x4s and a 12 RV fan inside to create a gentle breeze out.
The lid is 18-mm (3/4") concrete cement board with 2x4 stiffeners inside, and around the edge are 2x4s with biscuits every 4". Hitachi blades are nice for this.
So step #1 was the frame
Step #2 the fan
Step #3 with concrete board sides.
Step #4 the stiffeners for the top.
Step #5 was 2x4 stiffening edging around the top with biscuit holes
Step #6 was bonding on the mosaics
- step 6.5 was sealing
Step #7 was cutting the mosaic post facto, and then a grinder to bevel the edge
Step #8 was routing the jarrah, sanding, varnishing and biscuits.
Step #9 was glueing on the edging
Step #10 was grouting the mosaics
- step #11 will be more sealing.
Still sitting 1/2 from the wall for the sealing to take place.
(And then some render/stucco work on the base)
About 4' high I think(??). A bar stool works to belly up to it..
There is a 1-cm slope away from the house.
They do not work when it is humid.
Anyhow the boss wanted a cover it with some limestone mosaic sheets of tiles...
And hence I put a frame of 2x4s and a 12 RV fan inside to create a gentle breeze out.
The lid is 18-mm (3/4") concrete cement board with 2x4 stiffeners inside, and around the edge are 2x4s with biscuits every 4". Hitachi blades are nice for this.
So step #1 was the frame
Step #2 the fan
Step #3 with concrete board sides.
Step #4 the stiffeners for the top.
Step #5 was 2x4 stiffening edging around the top with biscuit holes
Step #6 was bonding on the mosaics
- step 6.5 was sealing
Step #7 was cutting the mosaic post facto, and then a grinder to bevel the edge
Step #8 was routing the jarrah, sanding, varnishing and biscuits.
Step #9 was glueing on the edging
Step #10 was grouting the mosaics
- step #11 will be more sealing.
Still sitting 1/2 from the wall for the sealing to take place.
(And then some render/stucco work on the base)

About 4' high I think(??). A bar stool works to belly up to it..
There is a 1-cm slope away from the house.