Volume to weight

On Apr 27, 2006, at 9:14 AM, Katharine Thayer wrote:

>
> On Apr 26, 2006, at 2:56 PM, Marek Matusz wrote:
>
>
>
>> To clarify my recipe, my gum mix consisted of 0.25 g of dry lamp
>> black from Daniel Smith (or is it called carnbon black?, can't
>> remember at this moment), 3 grams of dry gum (I actually used
>> 10cc of 14 baume gum which is about 30%)
>>
>
> Obviously there's no way to compare this to the amount of paint I'm
> using, as we don't know how much pigment is in a given amount of a
> given brand of a paint made of a given pigment.

I've been doing some studying to try to find a way to ballpark an
estimate of the amount of pigment in my paint, so I can get an idea
of how our recipes compare. It could only be a ballpark, since of
course paint brands differ in their pigmentation, but I was just
trying to get an idea. What I have found has surprised me. For some
reason I always thought there would be more vehicle than pigment in
paint, but that's not of course the case at all.

Unfortunately I've only been able to find general recipes, not
pigment-specific recipes, and I've only been able to get amounts in
volume rather than weight. Since I have neither powdered pigment nor
a scale that weighs that fine (lamp or carbon black are very light
pigments) I need help translating volume to weight. Marek, how hard
would it be for you to give me a translation of volume to weight for
your carbon black? Say, how many tablespoons or teaspoons or
whatever measure of volume you might have available is a gram of
powdered carbon? Don't go to a lot of trouble, but if it's not too
hard, I'd like to know,
Katharine
Received on 05/03/06-09:15:03 AM Z