[Halld-tracking-hw] Carbon fiber endplates and plastic feedthrus

[Tim Whitlatch]

Hi Curtis,

The feedthrus had a high spot (.0003 inches) near the parting line of 
the mold. This is being corrected to bring the parts withing drawing 
tolerance, the remaining areas will be unchanged.

Tim

Curtis A. Meyer wrote:
> Hi Tim -
>
>    I thought we agreed  that the plastic feed-thrus were ok the way 
> that they were.  We
> agreed that we would ream out the end-plate to spec (0.4375) to 
> accomodate them and all
> the fits would be good. We did not want the OD of the new feed 
> throughs changed.
>
>    The only change that we wanted was the ID of the pin holder 
> increased (to just shy of 0.050)
> in size to accomodate our chain for stringing the wire. 
>
>
>    I indeed hope that we have not changed the feedthrough OD, we 
> definitely did not want
> that done ....
>
>    curtis
> On 6/7/10 10:28 AM, Tim Whitlatch wrote:
>> Hi Naomi,
>>
>> I know the previous email said that all the holes in the carbon 
>> plates will be reamed. I assume a .4375 inch reamer? At the same 
>> time, the plastic feedthrus that are inserted into the holes are 
>> being corrected to bring them within the .4360/.4345 inch required 
>> diameter. This will mean there will be .0015 to .003 inched 
>> diametrical clearance between the parts . This is just a heads up 
>> since the original requirement was to have these a line to line fit.
>>
>> Tim
>>
>>
>> _______________________________________________
>> Halld-tracking-hw mailing list
>> Halld-tracking-hw at jlab.org
>> https://mailman.jlab.org/mailman/listinfo/halld-tracking-hw
>
>
> -- 
> 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/      
>
>   
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