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subcommittee:laser-minutes-20170312 [20170312-1140]
nick created
subcommittee:laser-minutes-20170312 [20170312-1540] (current)
nick meeting, Si mirror, alignment
Line 3: Line 3:
   * Jim, Nick, Glenn Martin   * Jim, Nick, Glenn Martin
  
-  * New 1 GaAs lens, 6 (2 Si, 4 Mo) new mirrors have arrived +  * New 1 GaAs lens (thanks Steve!) 
-    * Install some in LC1290 today +  * 7 new mirrors have arrived: 
-  Jim's ordered a new driver board ($97), should be here next week +    * 3 * Si, matte one side, with gold-coloured reflective surface coating 
-    * Will reimburse himself with free laser usage+      Less dense, higher specific heat but lower total thermal mass, appropriate for small to medium power (fine for us at 130W!), possibly less durable? 
 +      * [[http://​www.sawmillcreek.org/​showthread.php?​206087-Mirror-types-for-CO2-lasers]] 
 +      * [[http://​www.lasercomponents.com/​de-en/​product/​mirrors-for-co2-lasers/​]] 
 +    * 4 * Mo metal, probably uncoated on reflective surface 
 +    * Install final head mirror in LC1290 today
  
   * Issues since previously, or continuing   * Issues since previously, or continuing
     * LC1290     * LC1290
-      *Cutting 3mm MDF@30mm/​sec+      * Cutting 3mm MDF@30mm/​sec 
 +      *   
 + 
 +<​code>​ 
 +From: "​Lemming ." <​inertial@gmail.com>​ 
 +Date: Fri, 3 Mar 2017 21:56:18 +0800 
 +Subject: [artifactory-laser] BIg Red Y Axis Driver dead 
 +To: Artifactory Laser Subcommittee <​artifactory-laser@googlegroups.com>​ 
 +</​code>​ 
 + 
 +<​code>​ 
 +From: "​Lemming ." <​inertial@gmail.com>​ 
 +Date: Sat, 4 Mar 2017 18:02:21 +0800 
 +Subject: [artifactory-laser] Big Red HV Cable issues. 
 +</​code>​ 
 + 
 +     * HV cable, silicone tubing 
 +     * Lid still a bit wonky - replace 3* hinges
  
   * Glenn keen to be trainer, got some students in mind   * Glenn keen to be trainer, got some students in mind
 +    * AS60825.1 (2014) Laser class categories, CO2 10600nm safety
 +    * TODO: Schedule a training session for some lucky trainees!
  
-  * Next Wednesday 22nd1830 +  * LC1290 alignment 
 +    * Aspect ratio checkgood 
 +      * Configured AxisOnePulseMoveLength is same for X and Y 
 +      * Y is good, well within 1% 
 +      * X is adequate, compressed by a small factor, approaching 1% 
 +    * Bed level check: Poor, out of focus on LHS 
 +      * Cuts 50mm/sec on right, 30mm/sec or worse on left 
 +      * Replace original metal final mirror - clean, with small centre blemish 
 +        * Fresh coated Si mirror, now cutting at 55mm/sec on right 
 +      * Clean chaff and level bed 
 +        * Now consistent: cutting 3mm MDF at 55mm/second
  
----- +  * LG500 
-    * LC1290 +    * Out of order, stepper driver for Y axis borrowed for LC1290, replacement due to arrive soon 
-      Bed level check +    Jim's ordered a new driver board ($97), should be here next week 
-        2016-12-05: LEM+JM checked: bed is level +    Will reimburse himself with free laser usage 
-          Slats supporting the bed have MDF char and move around +    [[https://​www.aliexpress.com/​item/​3ND583-Leadshine-Driver-3ND583-3phase-stepper-Drive-driver-For-Cnc-Router-Laser-engraving-Machine-Three-phase/​32612741866.html]] 
-          * New honeycomb?​ + 
-      * butMirror alignment needed at 2016-12-05: masking tape shows the beam seeming to go quite high into the aperture at the top of the head at all areas of the travel +  Next subcommittee meetingWednesday 20170322-1830  
-      * TODO: Check chiller + 
-        * water level +  Carried forward:
-        * Does temperature stay on target or creep up? +
-        * temp snapshot: 19.2C, 18.8C +
-      * New tube test install +
-        Pick a downtime dayWed 20161228-0900 ; with a lunchtime deadline for rollback +
-    * LG500 +
-        temp snapshot16.0C, 16.4C+
     * Can we find/​replace the missing access keys? Only 2 of 6? remain     * Can we find/​replace the missing access keys? Only 2 of 6? remain
     * Monitor/​backup PC config     * Monitor/​backup PC config
-    * No fresh spare lens: want 2 * 50.8mm + 2 * 63.5mm+    * fresh spare lens: want 2 * 50.8mm + 2 * 63.5mm
       * Regarded as a consumable       * Regarded as a consumable
       * Want list of spares on the wiki       * Want list of spares on the wiki
       * Resolved: buy some!       * Resolved: buy some!
-    * Open up artifactory-laser list view topics: agreed; DONE 
  
/var/www/wiki.artifactory.org.au/htdocs/data/pages/subcommittee/laser-minutes-20170312.txt · Last modified: 20170312-1540 by nick