Shell feature for hollow parts in Solidworks - Cell-by-Cell Formula Trace

Sample Data

This data shows parts with their wall thickness and original solid volume before applying the Shell feature to hollow them out.

Cell	Value
A1	Part Name
B1	Wall Thickness (mm)
C1	Original Volume (cm3)
D1	Hollow Volume (cm3)
A2	Box
B2	2
C2	1000
A3	Cylinder
B3	1.5
C3	785
A4	Cube
B4	3
C4	729

Formula Trace

Hollow Volume = Original Volume - (Surface Area * Wall Thickness)

Step 1: Calculate Surface Area for Box (assumed 600 cm2)

Step 2: Wall Thickness for Box = 2 mm = 0.2 cm

Step 3: Volume removed = Surface Area * Wall Thickness = 600 * 0.2

Step 4: Hollow Volume = Original Volume - Volume removed = 1000 - 120

Cell Reference Map

    A       B       C       D
1 |Part  |Thickness|Orig Vol|Hollow Vol
2 |Box   |2       |1000    |???
3 |Cylinder|1.5    |785     |???
4 |Cube  |3       |729     |???

The formula uses Original Volume (C column) and Wall Thickness (B column) to calculate Hollow Volume (D column).

Result

    A       B       C       D
1 |Part  |Thickness|Orig Vol|Hollow Vol
2 |Box   |2       |1000    |880
3 |Cylinder|1.5    |785     |???
4 |Cube  |3       |729     |???

The Hollow Volume for the Box is calculated as 880 cm3 after applying the Shell feature with 2 mm wall thickness.

Sheet Trace Quiz - 3 Questions

What is the wall thickness in cm used for the Box part?

A 20

B 0.2

C 2

D 0.02

Key Result

Hollow Volume = Original Volume - (Surface Area × Wall Thickness)