[Boatanchors] Micamold Recovery- Aging Test

[Ed via Boatanchors]

great project!
neat they can be brought back.
Ed#
 
 
In a message dated 7/28/2014 10:25:25 P.M. US Mountain Standard Time,  
arc5 at ix.netcom.com writes:

Some  have been following this test of the possibility of
recovering NOS "leaky"  Micamold caps to some level of service.

Summary-
20 NOS "leaky"  Micamold caps were baked at a temperature
above the boiling point of water  (250-300 degs F) for 1.5 hours.
They were allowed to cool for 2  hours.  There was some minor
oil leakage from some caps.  Some  had minor "steam bulges."
19 of the caps now tested "good" on my ZM-11  bridge.
The caps were coated in plain white candle wax and placed
in a  high-temp, very high humidity environment for 3 days.
One failed due to a  defective wax coat, the remaining 18
testing "good."    The  remaining caps were connected in parallel,
the group then placed in series  with 170 VAC PTP and a lamp
for several days.  None failed.  The  caps were then left to "age"
in a hot Texas barn for a month and  retested.  None failed.
I have marked the 18 remaining caps with a  daub of paint
and added them to my inventory.

I will now process a  much larger batch, agitating the wax
this time for better coverage, and  test them.
I'll let you know.

73 DE Dave  AB5S


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