Determining the amount of rubber needed for your project is done in three steps:
- Measure the Length, Width and Thickness of the soap bar.
- Add 3/8" for walls all around, multiply these dimensions to determine the volume of rubber.
- Deduct the volume taken up by the soap from the volume of the rubber - what is left is the amount of rubber needed for the mold.
Formulas:
 | 1 cubic inch of rubber = .043 pounds |
| 1 cubic inch of soap = .60 oz. of soap |
| use 3/8" for thickness of mold walls |
Example:
Take the Length (L), Width (W), and Thickness (TH) of soap bar, add
3/8" for walls all around. This gives overall size of mold
needed.
Determine total weight of rubber, less volume taken up by soap, this
will equal the amount of rubber needed.
Step One:
(L" of mold) x (W" of
mold) x (TH" of mold) = Cubic Inches of mold without soap
Step Two:
(wt of soap in oz) / .60 = Cubic inches taken up by soap
Step Three:
(Step 1 minus Step 1) x (.043) = Number of pounds of rubber needed.
or Pounds / 16 = Number of ounces needed.
If you need help with the calculations, contact Bob or Jerry at 201-568-7833, or email sp48info@sedtek.com
113 Meadow Street, Hackensack, NJ 07601
Phone: 201-489-4040 Fax: 201-489-4949 Email:
info@sedtek.com