Glass cast 10/50 epoxy resin/Silicone mould ratio maths


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S34n
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Hi all, Thank you for any help in advance,
I've asked this kind of question before and unfortunately once again I've let my head confuse me.
For the Glass cast 10/50 epoxy resin ratio maths it gives 2 options 100:45 or 2:1 
1/  100:45  surely wont be the same as 2:1 as 2:1 is half;  so if one (2:1 ratio) is instructing half but the other (100:45) when worked out isn't half how will it cure correctly or the same if they're different measurements/amounts ? 
2/  Why is there 2 ratio options to choose from? 
3/   Can you use the 2:1 ratio say for lower and higher amounts for example if I poured:-   
200g resin :  would it be 50g hardener 
or
10g resin : would it be 5g hardener ?

4/ I have attached some photos whereby the surface isnt smooth I used the mix ratio chart and 25g  17g:8g ratio  to the absolute dot.
 
My next question is:
How do I make a mould for something like this which has two sides to it using the cs2 condensation cure silicone mould rubber 100:5 ratio would I need two halves of mould or 1 mould?:


Thank you so much for any help and I apologise if this is too long or in the wrong part of the forum
Kindest Regards
Sean

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Lester Populaire
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S34n - 3/17/2019 5:31:35 PM
Hi all, Thank you for any help in advance,
I've asked this kind of question before and unfortunately once again I've let my head confuse me.
For the Glass cast 10/50 epoxy resin ratio maths it gives 2 options 100:45 or 2:1 
1/  100:45  surely wont be the same as 2:1 as 2:1 is half;  so if one (2:1 ratio) is instructing half but the other (100:45) when worked out isn't half how will it cure correctly or the same if they're different measurements/amounts ? 
2/  Why is there 2 ratio options to choose from? 
3/   Can you use the 2:1 ratio say for lower and higher amounts for example if I poured:-   
200g resin :  would it be 50g hardener 
or
10g resin : would it be 5g hardener ?

4/ I have attached some photos whereby the surface isnt smooth I used the mix ratio chart and 25g  17g:8g ratio  to the absolute dot.
 
My next question is:
How do I make a mould for something like this which has two sides to it using the cs2 condensation cure silicone mould rubber 100:5 ratio would I need two halves of mould or 1 mould?:


Thank you so much for any help and I apologise if this is too long or in the wrong part of the forum
Kindest Regards
Sean

One is the mixing ratio by volume, one by weight. And 25 grams is a very small amount so if your scale only shows one digit this might be already quite off. 
And i never used any glass cast resin before, but as far as i understand you would be better of using the glass cast 3 as it has better self leveling properties.

S34n
S
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Posts: 18, Visits: 54
Lester Populaire - 3/17/2019 6:45:26 PM
S34n - 3/17/2019 5:31:35 PM
Hi all, Thank you for any help in advance,
I've asked this kind of question before and unfortunately once again I've let my head confuse me.
For the Glass cast 10/50 epoxy resin ratio maths it gives 2 options 100:45 or 2:1 
1/  100:45  surely wont be the same as 2:1 as 2:1 is half;  so if one (2:1 ratio) is instructing half but the other (100:45) when worked out isn't half how will it cure correctly or the same if they're different measurements/amounts ? 
2/  Why is there 2 ratio options to choose from? 
3/   Can you use the 2:1 ratio say for lower and higher amounts for example if I poured:-   
200g resin :  would it be 50g hardener 
or
10g resin : would it be 5g hardener ?

4/ I have attached some photos whereby the surface isnt smooth I used the mix ratio chart and 25g  17g:8g ratio  to the absolute dot.
 
My next question is:
How do I make a mould for something like this which has two sides to it using the cs2 condensation cure silicone mould rubber 100:5 ratio would I need two halves of mould or 1 mould?:


Thank you so much for any help and I apologise if this is too long or in the wrong part of the forum
Kindest Regards
Sean

One is the mixing ratio by volume, one by weight. And 25 grams is a very small amount so if your scale only shows one digit this might be already quite off. 
And i never used any glass cast resin before, but as far as i understand you would be better of using the glass cast 3 as it has better self leveling properties.
Thank you replying

My scale shows to about 4 or decimal points as in : 67.9321 they're really accurate for their size.

GO

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S34n - 6 Years Ago
SleepingAwake - 6 Years Ago
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oekmont - 6 Years Ago
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Warren (Staff) - 6 Years Ago
             Ok thanks warren appreciate your time
S34n - 6 Years Ago

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