pot melt into a square or retangle
- January 27, 2014 at 10:22 pm #10083betncaParticipant
I need the formula for determining how much glass would go into a square or rectangular pot melt. know I saw a formula somewhere but can’t find it. For instance, if I wanted to make the slab 1/4 in thick and 6 x 4 inches. The formula involved determining how many grams of glass I would need. Thanks for anyone’s help.January 28, 2014 at 7:38 pm #13219TheMacdonaldParticipant
I am certain there is a simpler way to calculate, but here’s what I did:
6×4= 24 square inches
http://www.onlineconversion.com/ to calculate the diameter of a circle with an area of 24 square inches. 5.54 inch diameter
Then used Paul’s calculator above to estimate 9 ounces of glass.
SOMEBODY else might check the math and theory.
TAMFebruary 1, 2014 at 5:41 pm #13220JeaniceParticipant
Length x Width x Height = Volume
6.00 x 4.00 x 0.25 = 6.00 cubic inches
Convert cubic inches to cubic centimeters. You MUST convert your volume to cubic centimeters or the calculation won’t work. It may be easier to just measure in centimeters.
6.00 cubic inches = 98.32 cubic centimeters (cc)
Now, mulitply that by 2.5, which is the specific gravity of glass.
98.32 x 2.5 = 245.8 grams. So you will need 245.8 grams of glass. (Might want to add extra to account for the glass that will stick to the pot.)
If you measure in centimeters in the beginning the calculation is VERY easy.
Length x Width x Height x 2.5 = grams of glass needed
Now you can convert grams to ounces if you want or need to.February 1, 2014 at 5:54 pm #13221JeaniceParticipant
Circles have a different equation. Remember that a radius is half the diameter of the circle. An 8 inch circle has a 4 inch radius. A 10 inch circle has a 5 inch radius.
Volume of a circle = 3.14 x radius x radius x height
So if we want an 8 inch circle that is 1/4 inch thick…
3.14 x 4.00 x 4.00 x 0.25 = 12.56 cubic inches
Again we have to convert those pesky inches to centimeters
12.56 cubic inches = 205.82 cubic centimeters
Now mulitpy by 2.5 just like with rectangles
205.82 x 2.5 = 514.55 grams Tada!
Again, if you start with centimeters it is MUCH easier
3.14 x radius x radius x height x 2.5 = grams of glass neededFebruary 2, 2014 at 8:04 am #13222Stephen RichardParticipantFebruary 7, 2014 at 5:27 pm #13223betncaParticipant
Thanks to everyone- I will try another potmelt.
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