Hi guys and welcome back to my channel, Blue Nose Trading. My name is Tori Solis and today I'm going to show you how to measure the specific gravity of your glaze.
Specific gravity of your glaze is going to tell you how much mineral you have vs. how much water you have. This is important for your glaze application in getting consistent results.
The general measurement formula for specific gravity is the weight of glaze, in this case we are going to do 100mL, over the weight of water of the same amount, which is going to be 100mL, and should be about 100 grams.
We are going to go ahead and get an accurate scale here. We have a beaker. I'm going to put the beaker on the scale. I'm going to zero out the beaker. I'm going to measure out 100mL of water. That's about it right there, doesn't have to be perfect. That is 100 grams, just to test our reference. We are going to empty that out, put the beaker back on the scale. Then pour in 100mL of this glaze.
The weight of 100mL of this glaze is 186.37g. If we divide that by 100, we are going to get 1.86.
The specific gravity of this particular glaze is 1.86, which is pretty high. What you want your specific gravity to be is really going to depend on you and what you're doing. Most dipping glazes you want between like 1.3 and 1.6. 1.86 is a bit high. This is a brushing glaze and I have found that for this particular glaze that this works well to have it pretty thick in application. This is Old Forge Sunset, which some people may have different experiences with how they use it, but I've liked the results I've been getting with the way that I've been doing my application at this level.
That's how you measure the specific gravity of a glaze. If you have any questions go ahead and leave them below. If you'd like to see a weekly art video, you can subscribe to my channel, Blue Nose Trading. If you'd like to help support my channel you can find me at patreon.com/bluenosetrading and I will see you guys next week with another art video.
Specific Gravity Formula:
weight of glaze(100g)/weight of equal amount of water (100g)
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