[ccp4bb]: Re: [OT] Replating anodes - SUMMARY

[Jeff Taylor <jstaylor@duke.edu>]

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Hi,
	I asked about repairing a damaged target in our Rigaku rotating anode
X-ray generator, and received many helpful responses.  First I should
clarify the problem.  The target in question has a deep groove, probably
caused by a combination of a cooling problem and having the bias set too
high.

>From the responses, the standard dogma is polish, machine, or replace
(re-cup), depending on the severity of the damage.  

There were several suggestions as to how copper might be added,
sputtering and electroplating, but no one reported actually trying these
methods.  There was one suggestion that the target may not be pure
copper, and if true, then adding metal by electroplating is not
possible.  (I don't know about sputtering.)

I've got a call in to MSC/Rigaku and I'll see what info and prices I can
get from them.  Regardless, I think I will try to electroplate the one I
have.  It is too badly grooved to polish or machine, so what have I got
to lose?  I'll report back on how it goes.

- Jeff Taylor

-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Dr. Jeffrey S. Taylor       Duke University Medical Center
Department of Biochemistry  Box 3711, Nanaline Duke Bld  
Phone (919) 681-5266        Durham, NC 27710