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Dirt sling bullets (Read 827 times)
Blindsquirrel
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Dirt sling bullets
Jan 1st, 2023 at 5:08pm
 
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« Last Edit: Jan 2nd, 2024 at 3:00am by Blindsquirrel »  
 
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Blindsquirrel
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Re: Dirt sling bullets
Reply #1 - Jan 2nd, 2023 at 9:11am
 
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« Last Edit: Jan 2nd, 2024 at 3:00am by Blindsquirrel »  
 
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IronGoober
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Re: Dirt sling bullets
Reply #2 - Jan 2nd, 2023 at 7:54pm
 
Note that when you fire them, they will lose a significant amount of weight (and shrink a bit). If you fire them at a low temperature, they will be porous enough to dunk into water and gain some of the weight back. But they will also be weaker. I'm not sure if fully dense clay is more dense than concrete or not.
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Blindsquirrel
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Re: Dirt sling bullets
Reply #3 - Jan 2nd, 2023 at 10:26pm
 
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« Last Edit: Jan 2nd, 2024 at 2:59am by Blindsquirrel »  
 
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Blindsquirrel
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Re: Dirt sling bullets
Reply #4 - Jan 3rd, 2023 at 10:07am
 
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« Last Edit: Jan 2nd, 2024 at 2:58am by Blindsquirrel »  
 
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Blindsquirrel
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Re: Dirt sling bullets
Reply #5 - Jan 12th, 2023 at 9:39pm
 
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« Last Edit: Jan 2nd, 2024 at 2:59am by Blindsquirrel »  
 
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SmokinRocks936
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Re: Dirt sling bullets
Reply #6 - Jan 13th, 2023 at 4:30pm
 
https://www.6mmbr.com/sandcomparison.html#:~:text=Sand%20Characteristics,165%2D1...

https://www.thecrucible.org/guides/ceramics/how-to-glaze/

Some links on the subject of sand density and firing technique for your perusal. I had the idea of making a typical biconical sling bullet out of dense clay and sand, fired then was dipped in a ceramic shell and fired again. Bisque is a term used for an object fired once already. Iíd use a natural fiber string to dip and dry over and over then heat in the brick style kiln suggested in the second link.

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« Last Edit: Jan 13th, 2023 at 5:43pm by SmokinRocks936 »  
 
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Blindsquirrel
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Re: Dirt sling bullets
Reply #7 - Jan 16th, 2023 at 9:46am
 
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« Last Edit: Jan 2nd, 2024 at 2:59am by Blindsquirrel »  
 
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Blindsquirrel
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Re: Dirt sling bullets
Reply #8 - Jan 17th, 2023 at 12:58am
 
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« Last Edit: Jan 2nd, 2024 at 2:59am by Blindsquirrel »  
 
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Re: Dirt sling bullets
Reply #9 - Jan 27th, 2023 at 12:56pm
 
It's better to not add grog/temper if you don't have to. The reason they use it for bricks and pottery is because it reduces thermal shock, increases wet strength, and minimizes shrinkage. The latter is the opposite you want for a bullet. Grog can also reduce fired strength as well. As long as you dry them properly first, and warm them up slowly, then the finished result is better. They're smoother too, which means better aerodynamics.
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Blindsquirrel
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Re: Dirt sling bullets
Reply #10 - Jan 27th, 2023 at 8:46pm
 
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« Last Edit: Jan 2nd, 2024 at 2:58am by Blindsquirrel »  
 
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