[Halld-tracking-hw] Plastic Parts

[Curtis A. Meyer]

Hi Gary -

     I was thinking about oversized and I came to the same thought you 
did. I would
want to try and have them sanded down (by cheap student labor). We have 
to check
them all anyway...  Curtis

    Curtis
On 7/19/10 4:34 PM, Tim Whitlatch wrote:
> Hi Curtis,
>
> This all sounds correct. One comment. If the feedthru or donut come 
> out slightly large in some areas (.0005 or so), does it make sense to 
> go through another iteration? Should CMU just sand each piece if needed?
>
> The delay will be approx. 6-7 weeks for these changes. I am guessing a 
> few thousand dollars for the changes to the mold.
>
> Cheers,
>
>       Tim
>
> Curtis A. Meyer wrote:
>> Hi Everyone -
>>
>>      CMU's understanding of the outcome of today's meeting on the 
>> plastic
>> donuts, feedthrus and pinholders for the CDC are as follows:
>>
>> 1)  Increase the OD of the feedthru by 1 mil.
>>       (This will move it up from just under 0.4355 to just under 
>> 0.4365).
>>
>> 2) Increase the size of the hole in the pin holder that holds the 
>> crimp pin
>>      to as close to what we had in May as possible.
>>      (This will allow us to seat the crimp pin in the pin holder).
>>
>> 3) If it does not generate an additional delay, we will increase the 
>> OD of
>>      the donut by 1 mil.
>>      (This will bring it up from under 0.609 to under 0.610)
>>
>>     - Curtis, Gary, Naomi and Yves
>>


-- 
Prof. Curtis A. Meyer		Department of Physics
Phone:	(412) 268-2745		Carnegie Mellon University
Fax:	(412) 681-0648		Pittsburgh PA 15213-3890
cmeyer at ernest.phys.cmu.edu	http://www.curtismeyer.com/