Piggy Bank

I did have old, Russian clock enclosure, and I wanted piggy bank. That was very quick and very easy upcycling action. Maybe 15 minutes including design, cutting and assembling. Top and bottom of coin compartment made of 3mm plywood. Walls around – 3mm acrylic glass. Looks good, now to testing 😉

K40 Laser table

I’ve seen hundreds of different K40 table projects: adjustable, non-adjustable, 3d printed, welded, improvised, motorized etc. I just wanted a bed easy to adjust every few days, stable and attached to gantry rather than to wobbly bottom. Here we go: few aluminium extruded profiles, 4x M6 screws, 4 springs and I have a bed that does what and how I need. I can remove slats and only leave them where support is needed – that allows me to have clean, tidy cuts. Read more “K40 Laser table”

K40 Laser – The beast is alive

Finally I have finished most of my K40 mods. The plan is mostly realised. We have

  • Proper wiring, key switch, kill switch
  • 12V adjustable speed bilge fan for smoke exhaust
  • 12V water pump
  • 12V internal LED light
  • LED laser pointer
  • Air assist with adjustable air flow rate
  • Water flow senor (disables laser if flow rate too low)
  • Water temperature sensor (disables laser if temp too high)
  • Water level sensor (because water tank is black opaque to prevent algae growth)
  • PSU compartment temperature sensor
  • Lid open sensor (disables laser when open)
  • Digital percentage and current display for laser power setting
  • High flow case fan for PSU compartment

Mechanised adjustable bed still needs to be done. I’ve seen few projects and didn’t like them very much. In free time (free time?) I’ll design my own adjustable, powered bed. Now it’s time to cut and engrave!

That’s how it works:

Read more “K40 Laser – The beast is alive”

K40 Laser Update 2

Slowly, but we are moving forward. Air assist with selenoid valve (madness!) and flow adjuster. Air provided from airbrush compressor via 1/8 BSP coupling. Cable/pipe chain, stepper cable holder – small things but still improvements. Testing 3″ 12V bilge fan with PWM motor regulator – on full power it sucks like… never mind, and is also a bit noisy. Half speed is enough to suck out any smoke from plywood cutting. 3D printed smoke manifold. Things left to do: cooling sensors cluster, switching panel.