Quote:
Originally Posted by Mark McLeod
This is second-hand but apparently, the countersunk screws were being overtightened when the CDFs were originally assembled.
This started stress cracks in the polycarb that were then aggravated by robots smashing into them.
The damage to the CDF occurred along the stress cracks.
The counter bore replacement of the countersink seems to have eliminated the stress cracks.
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I can't confirm they were countersunk (because I wasn't paying attention to that), but I can confirm that screws overtightened in manufacturing were labeled the root cause in Myrtle Beach.