HAM HEPI Caging Rear Plate

Document #:

LIGO-D080493-v1

Document type:

D - Drawings

Abstract:

Part of new Caging Assembly for Advanced LIGO HAM HEPI.

Files in Document:

• D080493-A.PDF (156.5 kB)

ICS/JIRA Record:

• ICS_LINK

Topics:

• Seismic Isolation
• Final Design

Authors:

• Andy Stein

Keywords:

HEPI

Notes and Changes:

Release for LASTI prototype.
V1 equivalent to A.

************
[the following is an email exchange with a machine shop (A. Stein):

//SHOP'S RESPONSE...
Sent: Tuesday, September 09, 2008 3:44 PM

Howdy,

No extra charge for these extra countersinks. Thanks for your prompt response.//

//LIGO'S ANSWER...
From: Andy Stein [mailto:astein@ligo.mit.edu]
Sent: Tuesday, September 09, 2008 3:20 PM
Subject: RE: countersinks

That sounds fine. So long as it doesn’t change the price, feel free to add countersinks to the other sides of these holes.

Thanks,
Andy//

//SHOP'S QUESTION...
Sent: Tuesday, September 09, 2008 3:17 PM
To: astein@ligo.mit.edu
Subject: countersinks

Hello Andy,

I have a question regarding some countersinks on tapped holes. I am working on D080493-01, ( HAM HEPI CAGING REAR PLATE), and on the print I have it calls for a countersink, on the near side only, on a 1/2-13 tapped hole. I was wondering if it would be alright to add the same countersink on the opposite side. This would save having a sharp edge on a threaded hole that could cause injury to the person assembling these parts. There are actually a couple parts in this latest batch that are dimensioned this way. D080492-01 and D080494-01 also have similar holes. Please let me know how you folks would like to handle these countersinks.//]