subcommittee:laser-minutes-20210220

Laser Subcommittee Meeting 2021-02-20

  • Attendees: BlakeS, NickB, FletcherB, BeauD, BenC
    • Next meeting(s): Four weeks: regular third Saturday 14:00 ? OK
  • We'd still like red dot beam combiners, which would render getting a tube that has a built in aiming beam moot
    • Would we like one?
      • Nick, Blake: yes; Fletcher: no
      • but the LC1290 is getting a SPT tube with co-linear aiming beam!
  • LG500 “Little Red” (out-of-order)
    • Time to re-commission!
    • LG500+KH7050
      • Shared chiller lines, both running off the CW-5200 refrigeration unit, set for 25.5 degrees C
        • CW-5000 unit is spare, same as the LC1290's
      • Test shared air extraction, Y fitting
        • Tested: extraction power has suffered a bit on the KH7050
    • New tube was installed (not the original Chengdu Weegiant 60W CO2 laser tube)
    • cutting 3mm MDF in centre of bed at 35mm/s
    • PC needs network - no link light when connected to the last remaining switchport
      • 8 port LiteWave LS108G switch on toolroom wall
  • KH7050 “Kellogg/Middle”
    • Air jet at laser head: poor
  • LC1290 “Big Red”
    • Tube is dying, 130W replacement is in the mail
      • 130W SPT tube with co-linear aiming beam! ~$1500 from aliexpress.com , thanks Blake!
      • TODO: Update: lc1290_parameters
    • cutting 3mm MDF in centre of bed at 25mm/s
    • Empty compressor tanks, water trap
      • TODO: KamilS has solenoid for auto-purge of main tank
        • stored in LC1290 control cavity
        • secondary tank and line trap will need occasional purge
    • Hour meter
      • The hour meter started from 1.6 hours, at 20171210 , 400-512 beam-active cutting hours per annum
DateHour count
201712101.6
2017121711.5
20181217488.9 100W installed 20181222
201912161026.3
202001131055.7
202002151083.6
202005161170.0
202006201220.1
202008151288.5
202009191318.25 tube dying: now under 50% original power
202010171341.5
202011211388.4
202012191441.1
202101161472.7
202102201500.5
  • subcommittee/laser-minutes-20210220.txt
  • Last modified: 2021/02/22 11:24
  • by nick