I tend to get a lot of jobs where clients want glass terrazzos. As much as I enjoy using a tamper on my roto hammer and hand sifting enough chip for each job I'd like to automate the process. It doesn't make much sense to me to purchase and ship glass when I can purchase it locally for a fraction of the price. So..Has anyone designed a machine that chips/sorts glass? I've built a few rapid prototypes and tracked my recovery. So far, I've only managed to recover 52% of the primary chip I'm after. Any thoughts would be appreciated?

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Most equipment will be large scale and be very costly. I've also looked into the smaller equipment that restraunts use and it does not produce the small size glass that is available.

Have you explored just purchasing your glass? If I remember correctly I pay $0.8/lbs for a few different colors.
I've ordered glass before but I have a product that I'm preparing to wholesale on a larger scale. I'd like to get the tax advantages of sourcing and processing my glass locally. I still need to dig into the numbers but locally sourced material is a big selling point in my neck of the woods. I just finished up processing 20lbs of glass in the shop tonight which cost me nothing for the material, just a few hours of my time. Might be time to consult an engineer.

I agree, it does seem silly to ship recycled glass all over the country.  I wish there were more local sources, or an easy way to make you own.


just did a search on you tube

Speaking of Glass Terrazzo.  I am curious about what loading rate people are using for this.  Glass:Concrete.  Also, whether you're pouring an SCC mix or hand packing a glass rich mixture.  I have one coming up and I'd like to get some recipe ideas outside my own head.  We have often stuck the glass down to the mold both horizontals and verts, then sprayed or poured over them and stippled the surface around the aggregate.  Thanks.  


By the pound...You load 2 to 2.5 times the amount of cement....In other words if you use 10 lbs of sand and 10 pounds of cement....You would put in 20 pounds of glass...But you can play around with that depending how dense you want the glass. I usually glue glass on the side walls but a pretty runny mix for the bottom.
I prefer to pour my glass terrazzos as SSC facecoat then back it with GFRC. Before the pour I hot glue some Masonite strips to make an internal form to hold the mix up the verticals until it kicks. Strip the strips then brush in some bonding acrlyic then lay in the fiber backer. You use way less glass opposed to wetcasting it full thickness.

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