[3dem] Clip ring question

[John Minter]

We have seen this many times. Our holders get a lot of use... After repeated
use, both the clip ring can get a bit worn and the little clip spring that
holds it in can get deformed. First, try a new clip ring. If it is still
loose, the clip needs to be replaced. We usually send the holder in to have
it replaced and checked out. I'd be interested to hear if others try
replacing the clip themselves and if there are tricks/tips to make such
replacement easier.

Best regards,
John Minter

-----Original Message-----
From: 3dem-bounces at ncmir.ucsd.edu [mailto:3dem-bounces at ncmir.ucsd.edu] On
Behalf Of Eduardo Sanz Garcia
Sent: Monday, November 24, 2008 9:36 PM
To: 3dem at ncmir.ucsd.edu
Subject: [3dem] Clip ring question

It seems to me that my clip ring doesn't lock the sample as well as my 
cryo holder used to do it. I have some times the impression that the 
clip ring is lose.
Two month ago, or so, when I inserted the clip ring it made two 
notorious "clicks". Now, I am not able to hear that sound.
Is there any problem with that?
I see the potential problem that the temperature is not transmitted 
effectively between the holder and the sample if the clip ring doesn't 
lock well. Is this a real concern?
Do the clip rings need some maintenance (plasma cleaning...)?

Thank you very much.
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