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Offlinegluvbox
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Registered: 07/15/08
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Drywall -> Gypsum via cheese grater
    #8797620 - 08/19/08 08:09 PM (10 years, 2 months ago)

So I drove all over the city looking for powdered gypsum and failed so I decided to make it myself from some drywall.  It was easier than I though.

8 sq inches of drywall turns into a little more than a half quart of gypsum.

I ground it up with the smallest holes on my cheese grater without removing the paper.  The paper then sifted out easily in my colander.

Enjoy:


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OfflineCrabmeat
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Registered: 06/24/08
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Re: Drywall -> Gypsum via cheese grater [Re: gluvbox]
    #8797660 - 08/19/08 08:17 PM (10 years, 2 months ago)

works like a charm for me.


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OfflineCrabmeat
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Re: Drywall -> Gypsum via cheese grater [Re: Crabmeat]
    #8797668 - 08/19/08 08:20 PM (10 years, 2 months ago)

Side note, take the drywall "stickers" for free at your local home supply store.  they are 2x4 strips of drywall they put under every 40 sheets so forklift blades can lift them up. ask a cashier or just take them and leave.


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Invisibleseven
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Re: Drywall -> Gypsum via cheese grater [Re: Crabmeat]
    #8797821 - 08/19/08 08:57 PM (10 years, 2 months ago)

AWSOME


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Offlinedrumjam
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Re: Drywall -> Gypsum via cheese grater [Re: gluvbox]
    #8797911 - 08/19/08 09:24 PM (10 years, 2 months ago)

This is what I love about this place, finding ideas that are sooooo easy and use basic garbage to do something I realllly love.  Brilliant!


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OfflineMaverick
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Re: Drywall -> Gypsum via cheese grater [Re: drumjam]
    #8798004 - 08/19/08 09:46 PM (10 years, 2 months ago)

Drywall... Damn I went out and bought a bag of 70% Gypsum pellets.  (The other 30% is like sulfer and stuff) it's soilbuster.  I can't grate it but I can crush it to a powder.


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OfflineIndianadan
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Re: Drywall -> Gypsum via cheese grater [Re: gluvbox]
    #8798043 - 08/19/08 09:53 PM (10 years, 2 months ago)

Being a drywaller I thought you should know that drywall binder is latex.  I don't know how that effects growth. I do know that some farmers use scrap drywall for adjusting ph of there soil. I was always scared to try it for mushrooms.  I might try it sometime.


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Offlineshawlow
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Re: Drywall -> Gypsum via cheese grater [Re: Maverick]
    #8798106 - 08/19/08 10:05 PM (10 years, 2 months ago)

Thanks for posting this. Using a hammer to pound drywall over and over into a powder is quite tedious.

I'm trying it your way next time.


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Offlinegluvbox
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Re: Drywall -> Gypsum via cheese grater [Re: shawlow]
    #8798505 - 08/19/08 11:22 PM (10 years, 2 months ago)

:smile::thumbup:

I'm not sure about the latex.  I plan to use some of this gypsum to supplement a wood substrate for some shiitakes.  I'll drag this thread back up when I get my results.


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Invisiblenorml840
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Re: Drywall -> Gypsum via cheese grater [Re: gluvbox]
    #8798527 - 08/19/08 11:26 PM (10 years, 2 months ago)

this beats the hell outta my sledgehammer tek.  my god it was 9 billion degrees the other day when i crushed up a slab.  i was sweatin like a fat bitch in heat.


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