The Snapmaker Diary

Discussion in 'Hobby Engineering' started by aokman, Dec 28, 2020.

  1. OP
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    aokman

    aokman Member

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    This evenings progress, modified the work holding a bit for more orientations. I now feel confident that I can fixture anything I need current but also put the machine where I need in the workspace repeatedly.

    Next job was chasing the laser focus... the manual focusing of the laser dot is super difficult by eye and was regularly off. So began 3 hours of chasing my tail after 1mm variance in the focus. In the end I settled on a 0.03mm feeler gauge to set the touch off followed by a 3.5mm drill bit to set the final laser head clearance on the actual part.

    Results so far are much better at 50% power, excellent detail!

    96E3D7A5-FEEB-461E-8076-BEE68AFF0951.jpeg

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  2. m3k

    m3k Member

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    bit of a long shot but... for connection dropouts it might be something to do with EMF and the data- perhaps use ferrite beaded cables away from any EMF source?

    looks great sofar welldone.
     
  3. OP
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    aokman

    aokman Member

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    Thanks :) it may have been my WIFI actually as I lost all connectivity and restarting the Ubiquiti AP seems to have solved it, weird but ill keep an eye on it :thumbup:
     
  4. m3k

    m3k Member

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    oh its wireless go for lunch pun 10/10
     
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  5. OP
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    aokman

    aokman Member

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    Overnight print, perfect!

    50% power, 2 pass, 140mm/s

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  6. millen

    millen Member

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    Very cool.
    When you say overnight print, how long does something like that take?
    How deep in the wood is the engraving, looks a couple of millimetres?
     
  7. OP
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    aokman

    aokman Member

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    Around 2-2.5mm deep and took 14hrs ish. Keep in mind though this was super conservative at 50% power, 2 passes and slow speed as I want best conditions. It can be pushed much harder.
     
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  8. dirtyd

    dirtyd Member

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    Looks nice but jeez it'd wanna for 14 hours! What's the step size? Also, tried soda blasting? Can clean up the burn residue around the edges.
     
  9. OP
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    aokman

    aokman Member

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    Like I said it was super conservative as this was a gift and it didn’t matter about it running overnight, only 50% power, speed was 140mm/s (3000mm/s max) and 2 passes (double the time). Can easily get it down to 3 ish hours I think. Would need much more powerful laser for a workhorse :)

    Will look into post processing thanks :) just experimenting currently...
     
    Last edited: Feb 25, 2021
  10. OP
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    aokman

    aokman Member

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    1st project complete! Going to be a great present for my mate :) gave it a light sand then hit it with oil to bring out the contrast.

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    Last edited: Feb 25, 2021
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  11. OP
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    aokman

    aokman Member

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    Spent most of last night pulling old patents to design this. First test print at 600mm/s, needs refinement, single pass seemed better for the diagram so ill revise it.

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  12. OP
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    aokman

    aokman Member

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    Snappy is getting a new home! 2nd IKEA Bror trolled added and bolted down to form the outer frame.

    Goals for the enclosure:
    • HEPA filtration system with charcoal (no ducting!)
    • Temperature and humidity regulated enclosure (eventually)
    • Some form of internal fire resistance (just incase)
    Overall this will cost roughly half what the official enclosure costs... Filter is on order which offers a large surface area also for long life. The Nidec fans are PWM controlled, ultra high durability and can move a shit ton of air at max speed but can throttle down to near 0 and not stall.

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    Last edited: Mar 14, 2021
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    aokman

    aokman Member

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    Filter has arrived and I have sourced most materials from Bunnings to build the box... The filter has a large, deep pleated surface area and carbon backed. There will also be a mesh prescreen filter to help extend its life. The Nidec fans are capable of consuming 36W a piece flat out but shouldn’t need to run them very fast while maintaining good pressure... They will be mounted in a pull configuration on the back side after some research on best practices.

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    Last edited: Mar 3, 2021
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  14. OP
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    aokman

    aokman Member

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    Some progress today after having some free time, started building the filter enclosure that will be mounted at the rear most likely. May have messed up the mitre cuts a but due to trusting Bunning shitty stock to be straight. May redo it tomorrow on the table saw instead. Initial design looks good though, will incorporate metal rails to retain the filter with rubber gasket followed by a baffle plate to mount the 4 x 120mm fans

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  15. CQGLHyperion

    CQGLHyperion Member

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    aokman

    aokman Member

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    The factory angles are quite good on the Bosch, it was the factory straight cuts on the Timber boards that were skewed and threw off the Mitre cuts. I have an angle gauge already :) great tool!
     
    Last edited: Mar 11, 2021
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  17. OP
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    aokman

    aokman Member

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    Round 2 went much better, decided to revise the filtering sealing to a front back design which left some meat on the bone to true up the existing sides. Decided to do it all on the table saw this time as there isn’t any blade deflection or inconsistency swapping tools...

    Decided the filter box will be hinged on 1 side and open outwards from the back. Upon closing, the rubber seals will compress over the filter to seal airflow.

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  18. OP
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    aokman

    aokman Member

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    This took waaaay too much effort... getting closer though!

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  19. dirtyd

    dirtyd Member

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    Looking good so seems like the right amount of effort! :thumbup:
     
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  20. OP
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    aokman

    aokman Member

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    Finally made some big progress today! Needs some cleaning up and final sealing, fan mounting, PWM wiring and power supply then the intake and exhaust grills

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