Small versus large mixed-yield packages for the same shell.
The same shell needs different package counts when supplied mixed yields differ. The count does not establish a suitable casting compound or a cheaper order.
Calculate two independent purchase scenarios
Prefilled values are illustrative. Replace measurements and product data on both sides. Quantities with different units or different products cannot be combined. Open a result in its calculator to save it to your material project.
A worked purchase comparison
An outer 0.4 × 0.6 × 0.3 m box has 72 L volume. Supplied 0.05 m side and end walls with a 0.05 m base leave a 0.3 × 0.5 × 0.25 m cavity of 37.5 L. The retained shell is 34.5 L. Supplied mixed yields of 10 L and 20 L require four and two packages respectively.
Use your measurements and selected products
Enter prepared mixed volume yield per selected kit or bag. Dry package mass and the outside dimensions of a box are not substitutes for mixed yield.
Rectangular Mould Box Master Displacement Kit Calculator
Subtract supplied master displacement from a measured rectangular mould box before ordering mixed material kits.
Tapered Round Pot Casting Shell Material Calculator
Subtract a supplied tapered inner cavity from the outer pot, checking that the cavity fits at the supplied base height.
Rectangular Planter Casting Shell Material Calculator
Count supplied rectangular shell volume without double-counting the corners where side walls meet.
Round Cast Disk Face Recess Material Calculator
Subtract a supplied centred circular face recess from a cast disk and convert retained volume to mixed material packages.
Hemispherical Bowl Casting Shell Material Calculator
Measure a supplied hollow hemispherical shell by subtracting the inner hemisphere, retaining its closed lower shell.
Flat Annular Sector Casting Material Calculator
Measure a flat ring-sector casting from supplied inner and outer diameters, sweep angle and thickness.
What makes the comparison valid?
All shell geometry and product yield are supplied. The tools do not choose wall thickness, reinforcement, strength, curing, chemical mix ratios, food contact or safe handling. Recesses and inner cavities must remain inside the supplied outer shape.
Illustrative quantities above are not market prices or construction recommendations. Compare actual permitted scenarios independently and keep alternative orders separate.
Next steps
- Measure the job correctly
- Check the rounding assumptions
- See the complete work family
- Save and compare your calculated project scenarios
Reviewed 5 October 2026. Search demand has not been measured.