# new mould. oil amount check

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#### dillsandwitch

##### Well-Known Member
Hi All,

I built a new log mould today and I just want to make sure im doing the math right for the amount of oils needed to fill it.

It is 620mm long, 90mm wide and 95mm high. So I went in cm for the math bit.
62x9x9.5 x.4 = 2120.4

So if my math there is correct it should hold 2120gms of oil right? and thats the amount that I put into the soap calc weight of oils part?

TIA
Dill

#### The Efficacious Gentleman

Supporting Member
Almost - as you're in metric (as well you should be) you need to use .7 not .4 for the conversion.
Edit - I make it 3593.52

#### dillsandwitch

##### Well-Known Member
How did you get that number? When I do the numbers I end up with 3710.
62x9x9.5 = 5301 x .7 = 3710.7.

i know my mathing abilities can suck sometimes but now I'm just confused

#### gigisiguenza

##### Well-Known Member
Dill - far as I know your math is right because I believe you do the following

Your mold is 620 x 90 x 95
Which means 62 x 9 x 9.5
Which equals 5301
Now you find your amount of oils
5301 x .7 = 3710.7
So you need 3710.7 g of oils for that mold.

That's the formula that 1) finds the volume of the mold, then 2) finds the amount of oils needed.

If I'm wrong TEG, please correct me as I would like to be clear on how to use the metrics as well as the US numbers

#### dillsandwitch

##### Well-Known Member
Thanks Gigi. I would still like TEG to chime in on how he got his number though. And thanks for the Metric numbers. I looked in the How to figure how much oil for mould sticky but I must admit I didn't look past the first page of it. Maybe the metric thing could be added to the first post by a mod?

#### gigisiguenza

##### Well-Known Member
Thanks Gigi. I would still like TEG to chime in on how he got his number though. And thanks for the Metric numbers. I looked in the How to figure how much oil for mould sticky but I must admit I didn't look past the first page of it. Maybe the metric thing could be added to the first post by a mod?

Dill - me too. I want to be sure I have it right also.

#### The Efficacious Gentleman

Supporting Member
Ah, my bad - I usually put a caveat on maths posts to point out that I am bad at it. I also get 3.7kg when I work it through properly...................

#### gigisiguenza

##### Well-Known Member
Whew, I understood it correctly

#### dillsandwitch

##### Well-Known Member
Awesome. Now bring on the weekend so I can try it out

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