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Reuse for glass

 
                    
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Would like to here from anyone recycling or repurposing glass. I making paperweights out of glass melted from old bottles. I've collected over 5000 bottles from old dumps. I use a propane weed burner to melt and form and a wood fired annealing oven.
IMG_20151016_102728.jpg
[Thumbnail for IMG_20151016_102728.jpg]
 
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That's a nice piece. I have used old bottles melted in a glass furnace to blow new objects, but never thought of using it the way you are.
 
gardener
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nice work!

a person could make arrowheads:



or a person can build a house:

 
pollinator
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Roberto Pokachinni : You might enjoy this variation on bottles in a cordwood wall, Rob Roy who is a prolific Writer on Owner built homes takes this idea One step

Further ! ////// See link below :





The Rob Roy version which favors paler clearer colored bottles uses an outside wrap of flashing or white plastic to transmit the greatest amount of light through his

Walls. Enjoy ! For the Good of the Craft ! Big AL
 
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For me, glass is primarily a disposal issue, since I haven't seen much that I would like to replicate, in the bottle glass category. I have used it effectively, to replace some of the gravel, when mixing concrete. Gravel is very inexpensive, so it's not about any cost savings. It's about not having a buildup of glass which  ends up mixed with soil in so many cases, if left lying about.

I have seen a few art glass items, made from recycled glass. Some of them are quite nice. But, when I look at the quantity of fuel burned, to turn a pound of glass into something useful or decorative, I always come back to the idea of just getting rid of it in concrete.
 
pollinator
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Dale Hodgins wrote:For me, glass is primarily a disposal issue, since I haven't seen much that I would like to replicate, in the bottle glass category. I have used it effectively, to replace some of the gravel, when mixing concrete. Gravel is very inexpensive, so it's not about any cost savings. It's about not having a buildup of glass which  ends up mixed with soil in so many cases, if left lying about.

I have seen a few art glass items, made from recycled glass. Some of them are quite nice. But, when I look at the quantity of fuel burned, to turn a pound of glass into something useful or decorative, I always come back to the idea of just getting rid of it in concrete.



Someone had that bright idea in our house, they had filled the eves with concrete made with glass, it was lethal to remove it when we replaced the roof since there were sharp shards sticking out everywhere. when it broke into chunks it left sharp fragments of glass everywhere, and now I am stuck with it as I cannot take it to the recycling because it is a mixed material. be very careful where you use glass in concrete. All glass here goes to recycling. Most of the "recycled glass" things I have seen look hideous to me, I do fancy the counter tops, but that takes more equipment than we have.
 
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It strikes me that if someone were trying to optimize upcycling/recycling in their construction techniques, cobbing clear or light colored glass bottles in as windows in a cob structure would allow light into the building.

Alternately, It occurs to me that you could use a foot or so of glass bottles along the top of a foundation for a greenhouse/high tunnel structure (mortaring them in place) to increase the amount of low-angle light, which might be beneficial for winter growing.  
 
Dale Hodgins
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The video shows a guy cutting bottles. He is using a wet saw, which usually prevents glass particles from becoming airborne. I have been on many job sites, where this sort of saw is used. Sometimes, the material does become airborne. That's because people are foolish in disposing of the sludge that accumulates in the bottom of the water bath. If it's just dumped out on the ground, it will dry out, and be whipped around by the wind. The safest place to get rid of this, is in the footing or mixed with concrete.

The small particles of glass are very destructive to clothing. Sometimes the person doing the cutting, will continue to wear those clothes after they are dried out, so that that person is now shedding little particles of glass, wherever they go.

I have taken a similar bottle, and scored the cut line deeply. This usually allows the glass to snap in the right spot. The process is faster, once you get good at it, it doesn't require any power tools, and it doesn't create millions of little pieces of glass, to contaminate our lungs.
 
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“The Rob Roy version which favors paler clearer colored bottles uses an outside wrap of flashing or white plastic to transmit the greatest amount of light through his

Walls. Enjoy ! For the Good of the Craft ! Big AL“

Given my experience with double and triple pane windows, if you don’t seal the 2 bottles with something like a bead of silicone, you will eventually get condensation inside your brick unless you’re in a very dry climate. Might even be worth buying a bunch of desiccant packets and toss 1 in each brick. Also if anyone is going to use a saw like that, lower the blade until it’s just exposed about twice the thickness of the cut to be made. Much safer to use that way.
Used to live not far from Rob and Jaki. He was pretty low tech, what some would call a hack, but good at marketing the cordwood concept. A couple of the people who taught Rob had really nice houses built in that style.
 
pollinator
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Kind of an old topic, but since it's been bumped again, I'll chime in.

One other option I came across.  Some people have use busted glass and concrete to make decorative faux geodes.
https://www.madebybarb.com/2017/05/05/diy-giant-concrete-geode/

 
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I think a way to use old glass would be to arrange it (entire bottles? Crush it up?)
Into a form. Arrange the glass into the shape you will want it to be in, THEN blast it with the fresnel lens.

You might be able to do ANY shape with preshaped molds.
 
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Dale Hodgins wrote:For me, glass is primarily a disposal issue, since I haven't seen much that I would like to replicate, in the bottle glass category. I have used it effectively, to replace some of the gravel, when mixing concrete. Gravel is very inexpensive, so it's not about any cost savings. It's about not having a buildup of glass which  ends up mixed with soil in so many cases, if left lying about.

I have seen a few art glass items, made from recycled glass. Some of them are quite nice. But, when I look at the quantity of fuel burned, to turn a pound of glass into something useful or decorative, I always come back to the idea of just getting rid of it in concrete.



since concrete is not exactly sustainable, is this really a sustainable solution? can crushed glass be used in hempcrete (a sustainable form of crete)?
 
Skandi Rogers
pollinator
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michael beyer wrote:

since concrete is not exactly sustainable, is this really a sustainable solution? can crushed glass be used in hempcrete (a sustainable form of crete)?



I cannot see how hempcrete is any more sustainable than concrete made with reused glass, both require open cast mining of materials, and tons of energy in their creation.
 
michael beyer
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Skandi Rogers wrote:

michael beyer wrote:

since concrete is not exactly sustainable, is this really a sustainable solution? can crushed glass be used in hempcrete (a sustainable form of crete)?



I cannot see how hempcrete is any more sustainable than concrete made with reused glass, both require open cast mining of materials, and tons of energy in their creation.



from my understanding, hempcrete is made from hemp (a renewable resource) and lime(stone)

is the mining of limestone especially ecologically destructive?
 
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Turning limestone into Portland cement takes a lot of heat,  usually in the form of fossil fuels.
It's a very energy intensive process, so things built with Portland cement have a high embodied energy.

If hempcrete uses Portland cement in the same amounts  as other 'cretes then it's still might have an edge in that the hemp is effectively sequestered carbon.

On the other hand,  are crucial nutrients tied up in the hemp?
Would we better off composting the hemp, feeding it to animals,  turning it to biochar, wearing it as clothing,  writing in it as paper, running it through a biodigester for fuel,  eating it,  processing it into medicine  or something else?
Some if these things can be done consecutively, and might leave enough fiber to still make hempcrete.

I think every container sold should have a deposit on it,  high enough to make not recycling them a luxury for the well to do.

Meanwhile,  a solar powered tumbler could turn glass into a safe and useful aggregate.
It still might be cost prohibitive,  and direct solar heating might be a better choice.

I wonder if glass could be set up to be melted via solar and automatically fall into water or oil, and what the resulting product would be.

 
michael beyer
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William Bronson wrote:

If hempcrete uses Portland cement in the same amounts  as other 'cretes then it's still might have an edge in that the hemp is effectively sequestered carbon.



hempcrete doesn't use portland cement — it uses lime
 
Bryant RedHawk
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michael beyer wrote:

William Bronson wrote:

If hempcrete uses Portland cement in the same amounts  as other 'cretes then it's still might have an edge in that the hemp is effectively sequestered carbon.



hempcrete doesn't use portland cement — it uses lime



Lime is created by burning limestone, that means some fuel has to be burned to make it.

Redhawk
 
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