just for reference

1. Square Cavity Bottom (No Frame Structure)
Click Calculate to see results
* Recommended: Keep max deflection < 0.1 mm to prevent flash
2. Square Cavity Bottom (Integrated Frame Structure)
C value table (based on l/a ratio):
l/a=1.0: C=0.044 | l/a=1.2: C=0.062 | l/a=1.4: C=0.078
l/a=1.6: C=0.090 | l/a=1.8: C=0.102 | l/a=2.0: C=0.111
l/a=3.0: C=0.134 | l/a=4.0: C=0.140 | l/a=5.0: C=0.142
l/a=1.0: C=0.044 | l/a=1.2: C=0.062 | l/a=1.4: C=0.078
l/a=1.6: C=0.090 | l/a=1.8: C=0.102 | l/a=2.0: C=0.111
l/a=3.0: C=0.134 | l/a=4.0: C=0.140 | l/a=5.0: C=0.142
Click Calculate to see results
3. Circular Cavity (Frame Structure)
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4. Support Plate
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* Support blocks should be as short as possible