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5/29/2025, 5:52:12 AM
>>2821451
Did a test with some samples, still no sand though.
I had a standard plaster of paris mix, and 2 mixes with elmer's glue, one in a 50/50 ratio of glue & water, and one with a 1 part glue to 10 parts water.
I let them cure for around a day, then cooked them in a convection oven in 30min intervals of 175f, 300f, and 400f, after which, I tested how strong they appeared to be.
The one without any glue was much weaker than the others, and the one with a 50/50 mix was the strongest; the 50/50 mix had an air bubble however, it wasn't too much stronger than the 1-10 mix either. This tells me its best to avoid a high glue mix, but still beneficial to have even a little glue.
They're now currently soaking in water, after 24 hours I'll test their strength again.
I am going to be doing some extensive testing later on, using a digital force gauge, and having samples kept for a year straight in certain conditions.
Did a test with some samples, still no sand though.
I had a standard plaster of paris mix, and 2 mixes with elmer's glue, one in a 50/50 ratio of glue & water, and one with a 1 part glue to 10 parts water.
I let them cure for around a day, then cooked them in a convection oven in 30min intervals of 175f, 300f, and 400f, after which, I tested how strong they appeared to be.
The one without any glue was much weaker than the others, and the one with a 50/50 mix was the strongest; the 50/50 mix had an air bubble however, it wasn't too much stronger than the 1-10 mix either. This tells me its best to avoid a high glue mix, but still beneficial to have even a little glue.
They're now currently soaking in water, after 24 hours I'll test their strength again.
I am going to be doing some extensive testing later on, using a digital force gauge, and having samples kept for a year straight in certain conditions.
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