Blog 2020

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What we have been doing at Little House

You can read about previous activity at What we did last year

2020-1-7 Tuesday

  • PeterH glued a railway track
  • Andy and Jon worked on the laser cutter. After last week's cleanup, they were measuring laser power and investigating the state of the optics. ChrisR helped with temperature measurement.
  • PaulB looked in for a short while
  • Welcome to some new faces:
    • Neil came to meet us. He will be back
    • Adam would like to gain new skills. Arduino, maybe?
    • Jamie is planning a controller for brewing and is looking for advice on the electrical side of things
  • Gavin and Isobel came to use the laser cutter. As it was under maintenance they will come back another week.
  • Hi to MartinB as well.
  • Attendance tonight = 12

2020-1-1 Wednesday

  • Jon and Andy came in to do some tinkering with the laser cutter
    • modify a plastic crate so we could soak the honeycomb bed of the cutter in Zep.
    • removed the honeycomb bed of the cutter to soak
    • broke the 'quick release fitting that attaches the hose to the tap
    • made a shopping list of what else we needed in screwfix
    • realised that it was a Bank Holiday and screwfix was probably closed :(
    • texted IanB in the hope he might have one - he did - and he brought it round for us (along with a donated PC).
    • repeatedly pressure washed the honeycomb - not perfect, but much better.
    • cleaned, washed and vacuumed all the insides of the laser cutter case.
    • spent some time making measurements of the laser power using our'dohicky'.
    • spent some time aligning the laser tube to see if power could be improved - there is probably room for some improvement still, we seem to lose a lot of power at each 'bounce' in the optical path.
    • have concluded that a spare lens and some spare mirrors are worth having.
    • need to investigate cleaning techniques for the mirrors and lens.
  • Attendance today = 2