phatty
Well-Known Member
So I started to make a water fall yesterday out of a hebel block very easy to carve with a die grinder here some pics
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Thats gotta be so much more watertight and easier than foam and liquid nails.
What dimensions are the blocks? Cost?
To my understanding it light concrete so would retain heat well I am going to seal it but it seams to hold water in a raw finish I only left it for 10 mins tho
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I agree all concrete will leach an I would doubt it is watertight but think it looks great and was thinking about a similar idea with a carved arch for my enclosure.Concrete does affect water quality, it is highly caustic, and makes water alkaline, this reduces over time (lots of time) you can't put fish into a new concrete pond without neutralising the water first, or sealing the concrete.
Also, if using a die grinder, or other power tools, use a quality dust mask, the dust can cause silicosis. nasty stuff!
Hebel is porous to an extent, it floats in water due to all the air bubbles captured in it. It looks like an Aero chocolate bar when you break it. I would seal it, I think water will eventually penetrate it.
For the OP, I would suggest you run a hose to simulate your water flow to experiment before you go too far with finish it off. Ive made a couple of water falls now, and I find water doesn't flow how we expect it too, and I've always had to tweak things a bit.
How is it different to concrete? I may be nieve in thinking this but I was under the impression that it was aerated concrete, is ther an additive that makes it different?Mudgudgeon
You beat me to it.... Hebel is band for use in many countries except here yet ? it is nasty stuff and has to be cut in a sealed room on site so other people don't breathe it in as it is carcinogenic. Really bad stuff that i would not use under any surcumstances let alone in a water source.
Hebel blocks as supplied are very safe. It is the dust produced when cut etc that is a problem as it contains silicates. If you use the correct safety gear you will have no problem. Most powdered building materials contain silicates including renders and grouts. Just use good practice.
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