40m
QIL
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OptContFac
Mariner
WBEEShop
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40m Log |
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Tue Feb 2 17:09:17 2021, yehonathan, Update, BHD, SOS assembly 
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Tue Feb 2 18:24:54 2021, Koji, Update, BHD, SOS assembly
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Thu Feb 4 15:14:55 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Feb 16 13:13:39 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Feb 16 15:29:01 2021, Koji, Update, BHD, SOS assembly
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Tue Feb 16 22:59:36 2021, Yehonathan, Update, BHD, SOS assembly
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Fri Feb 19 12:21:04 2021, Yehonathan, Update, BHD, SOS assembly
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Fri Mar 26 10:25:37 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Apr 6 15:42:57 2021, Yehonathan, Update, BHD, SOS assembly
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Fri Apr 9 20:54:54 2021, Yehonathan, Update, BHD, SOS assembly 
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Mon Apr 12 17:30:11 2021, Yehonathan, Update, BHD, SOS assembly
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Mon May 3 16:49:04 2021, Yehonathan, Update, BHD, SOS assembly 
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Tue Jun 1 16:17:06 2021, Yehonathan, Update, BHD, SOS assembly
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Wed Jun 2 01:03:19 2021, Koji, Update, BHD, SOS assembly
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Fri Jun 18 19:02:00 2021, Yehonathan, Update, BHD, SOS assembly  
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Fri Jun 18 23:53:08 2021, Koji, Update, BHD, SOS assembly
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Tue Jun 22 17:05:26 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Jul 27 17:14:18 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Jul 27 20:12:53 2021, Koji, Update, BHD, SOS assembly
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Mon Jun 28 12:35:19 2021, Yehonathan, Update, BHD, SOS assembly    
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Tue Jun 29 20:45:52 2021, Yehonathan, Update, BHD, SOS assembly 
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Thu Jul 1 16:45:25 2021, Yehonathan, Update, BHD, SOS assembly
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Wed Jul 28 12:00:35 2021, Yehonathan, Update, BHD, SOS assembly
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Thu Sep 23 18:18:07 2021, Yehonathan, Update, BHD, SOS assembly 
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Tue Oct 26 10:17:14 2021, Yehonathan, Update, BHD, SOS assembly
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Thu Oct 28 23:13:19 2021, Yehonathan, Update, BHD, SOS assembly   
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Tue Nov 2 15:02:03 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Nov 2 22:50:30 2021, Koji, Update, BHD, SOS assembly
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Mon Nov 8 17:22:27 2021, Yehonathan, Update, BHD, SOS assembly 
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Tue Nov 9 11:11:37 2021, Yehonathan, Update, BHD, SOS assembly
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Fri Nov 12 23:47:29 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Nov 16 17:42:46 2021, Yehonathan, Update, BHD, SOS assembly    
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Tue Nov 16 18:28:53 2021, Koji, Update, BHD, SOS assembly 
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Wed Nov 24 14:15:15 2021, Yehonathan, Update, BHD, SOS assembly
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Wed Dec 1 12:57:08 2021, Yehonathan, Update, BHD, SOS assembly 7x
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Mon Dec 6 18:23:04 2021, Yehonathan, Update, BHD, SOS assembly
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Thu Dec 9 21:57:35 2021, Yehonathan, Update, BHD, SOS assembly 
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Tue Dec 14 14:02:33 2021, Yehonathan, Update, BHD, SOS assembly 
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Wed Dec 15 22:09:53 2021, Yehonathan, Update, BHD, SOS assembly
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Thu Dec 16 18:16:36 2021, Yehonathan, Update, BHD, SOS assembly   
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Fri Dec 17 17:50:17 2021, Yehonathan, Update, BHD, SOS assembly   
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Fri Dec 17 19:16:45 2021, Koji, Update, BHD, SOS assembly
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Fri Dec 17 22:16:07 2021, Yehonathan, Update, BHD, SOS assembly
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Sat Dec 18 00:56:14 2021, Koji, Update, BHD, SOS assembly
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Mon Dec 20 13:52:01 2021, Koji, Update, BHD, SOS assembly
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Mon Dec 20 17:26:13 2021, Yehonathan, Update, BHD, SOS assembly 7x
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Tue Dec 21 18:04:46 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Jan 4 18:27:23 2022, Paco, Update, BHD, SOS assembly -- PR3    
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Wed Jan 5 19:18:06 2022, Yehonathan, Update, BHD, SOS assembly -- AS4  
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Thu Jan 6 17:00:20 2022, Yehonathan, Update, BHD, SOS assembly -- LO2  
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Thu Jan 6 17:16:51 2022, Yehonathan, Update, BHD, Using Peek screws/nuts
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Fri Jan 7 17:59:45 2022, Yehonathan, Update, BHD, SOS assembly -- SR2  
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Fri Jan 7 18:24:25 2022, Koji, Update, BHD, SOS assembly -- SR2
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Mon Jan 10 14:00:44 2022, not Koji, Update, BHD, SOS assembly -- SR2
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Tue Jan 11 09:53:14 2022, not Koji, Update, BHD, SOS assembly -- Peek screws and nuts
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Thu Jan 13 16:08:00 2022, Yehonathan, Update, BHD, gluing magnets after AS1/4 misfortune
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Fri Jan 14 17:33:10 2022, Yehonathan, Update, BHD, AS4 resurrection  
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Wed Jan 19 18:15:34 2022, Yehonathan, Update, BHD, AS1 resurrection   
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Thu Jan 20 12:10:51 2022, Yehonathan, Update, BHD, AS1 resurrection  
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Mon Jan 24 17:58:21 2022, Yehonathan, Update, BHD, PR2 Suspension
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Tue Jan 25 18:37:12 2022, TYehonathan, Update, BHD, PR2 Suspension  
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Thu Feb 24 18:05:58 2022, Yehonathan, Update, BHD, Re-susspension of AS1 
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Wed Mar 2 14:02:43 2022, Yehonathan, Update, BHD, Re-susspension of AS1
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Thu Mar 3 17:09:46 2022, Paco, Update, BHD, Re-susspension of AS1
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Mon Mar 7 16:56:08 2022, Yehonathan, Update, BHD, Re-susspension of AS1  
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Mon Mar 7 18:53:16 2022, Koji, Update, BHD, Re-susspension of AS1
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Tue Mar 8 12:24:13 2022, Yehonathan, Update, BHD, Re-susspension of AS1  
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Tue Mar 8 19:29:36 2022, Paco, Update, BHD, Re-balance of AS1
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Wed Mar 9 09:35:26 2022, Paco, Update, BHD, Re-balance of AS1
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Message ID: 16551
Entry time: Thu Jan 6 17:16:51 2022
In reply to: 16550
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Author: |
Yehonathan |
Type: |
Update |
Category: |
BHD |
Subject: |
Using Peek screws/nuts |
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There were several cases where the long EQ stops didn't perform as expected.
In one type of case, we used a counterweight at the front of the adapter but not in the back leaving a recess where the lower back EQ stop should touch.
In the other type, a recess in the thick optics adapter prevented the upper EQ stop from touching the adapter. In the first thick optic, the screw was screw barely scratched the recess' corner. In the second case, it didn't touch it at all.
In the last group meeting, we discussed using Peek screws (made out of plastic) to prevent metal on metal bumping when the EQ can touch the adapter and Peek nuts when it doesn't to increase its impact area.
Mcmaster has 1.5" long 1/4-20 screws (part number 98885A131) that will fit well in the OSEM plates. We can order 20 of those.
The biggest Peek nuts on Mcmaster however are not big enough (7/16" wide) to cover the entire bottom recess area which is 0.5" wide (they are good enough for the top recess area in the thick adapter optic design). Koji suggested that we can use a big Peek washer for that purpose that can be held between nuts. We should then order 10 Peek nuts (98886A813) and 1 package of 10 Peek washers (0.63" OD) (93785A600). |