After 10 days of
assembly the Kern Pyramid Nano was finally alive! On Wednesday night all
systems were as per specs, fluids were running cheerfully, and the spindle and
5 axis motion left us speechless. It was the time for final laser
calibration; the moment of truth. With the coolness of a pilot of a fighter
jet, Michael 'the German dude' set his Renishaw apparatus and commenced the
four hour adjustments procedure.
Now if you are not an
engineer then the next sentence and picture below will make absolutely no sense
to you, and that is perfectly fine - so no hard feelings. The total
error over the 400mm table was well under 1 micron and not more than 0.1
micron per 100mm of table travel. "So the machine is well within what
could be described as a miracle of mechanical engineering?"
we've asked. "Actually I am not sure" said cool Michael.
"What we see is not the 'machine error' itself but the error in nano-range
is most likely just the effects of environmental temperature and vibration of
the building." And finally, it all sunk in. This is precisely
why Kern calls Nano - nano. Too tired to celebrate, we quietly went
home, each of us dreaming our own nano dreams...
Around
lunch time on Thursday, I got a phone call from Josh: "Bad news,
dad. The x-axis has just disappeared of the screen. It looks like we
have a problem with the linear decoder. We are now disassembling the
entire block, Michael has cancelled his return flight and is extending
his stay for at least another week. Yes, we need a new encoder, new
cabling and Kern is sending a spare CPU unit from Germany, just in case
we need it too." The four hour sub micron calibration vanished with the X-axis without a single part being machined.
The
other day, Elon Musk's Space-X launched Zuma, the top secret US
spy satellite. But moments after the launch, like our x-axis, the
multi-million dollar satellite disappeared - literally vanished off the
radar. Yes, engineering on any scale can be heartbreaking and
engineering is not for the fainthearted.
In
January 2012, Pat Farmer accomplished one of the greatest feats in
human history. He arrived at the South Pole after the longest and
arguably most dangerous run ever. Pat ran for 21,000 kilometres - never
complaining about being tired nor disappointed, or his painfully
bloody blisters, cramps and injuries. He just ran - and that
determination - that physical and
mental triumph - put him in the company of the world's greatest
adventurers and achievers.
And
this is precisely what our "Made in Australia" project is all
about: endurance, not giving up, being tough as nails, and being
prepared to pay the price. And we'll enjoy every bit of that journey,
even when it hurts.
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