EWI model MO24 mic case crush test:

Objective:  Determine the crush load required to push the bottom rubber feet into the bottom panel of the case.  The testing procedure was limited to static load testing:

Test procedure: 

1)  The case was positioned on a scale equipped pallet jack:

2)  The top 4 ball corners of the case were secured from raising with blocking wedged under a secure beam:

3)  The crush pressure was incrementally increased by the pallet jack @ approx. 50lb. increments:

4)  1307 lbs. crush pressure was the point where the first "something" on the bottom of the case yielded.  The crush test was stopped at this point to tear-down the test apparatus and determine that first yield / failure point was on the case:

5)  Inspection of the case revealed the failed portion of the case was a ball corner rivet that had failed on the bottom of the case near one of the rubber feet.  No other damage to the case was apparent:

Conclusion:

1307 lbs static crush force applied to the case was insufficient to push the rubber feet into the bottom panel of the case.  Higher poundage of crush weight will be necessary to determine the yield strength required to push the rubber feet into the bottom panel of the case.