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From YouTube: Development Team Meeting - Feb 19, 2019
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A
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B
A
Okay,
well,
let's
get
start
anyway!
So
let
me
share
my
screen
here,
so
welcome.
We've
got
what
is
today
February
19
moving
right
along
here,
so
today,
I
want
to
actually
introduce
a
design
sprint
that
I'd
like
to
hold
a
sprint
for
the
open
source.
Golf
cart
now
that
comes
out
of
the
blue
somewhat,
not
totally.
A
But
it
turns
out
power,
cubes
hydraulics.
They
actually
make
it
very
easy
to
do
a
golf
cart
and
actually
Katrina
here
asked
me
to
do
so
for
getting
around
the
farm,
and
it
could
actually
be
a
good,
a
good,
easy
success.
Now
when
we
started
talking
about
it,
so
I
have
a
document.
If
you
look
at
the
so
today's
deaf
team
meeting
see
that
in
a
chat
we
paste
that
in.
A
Okay,
there's
the
the
document.
No
is
it
well,
it's
in
a
click
on
that
OS
golf
cart.
Link
then
right
in
the
working
dock.
You
man
it'll,
take
you
to
that
now.
One
of
the
things
I've
been
talking
about
also
is
so
I'm
working
on
a
book
getting
the
3d
printer
work
business
off
the
ground
in
terms
of
background
funding,
so
kind
of
transitioning
to
the
model
of
the
workshops
or
3d
printers
as
a
stable
revenue
model
trying
to
scale
that
that's
still
in
progress.
A
We
had
a
nice
build
last
week
at
Highland,
Community
College
planning
some
more
for
the
future,
but
one
thing
that
came
out
so
if
we
talk
about
FIRST,
Robotics
or
LSE
clubs,
I
do
believe
that
a
golf
cart
could
be
an
interesting
project.
So
I
talked
to
Caterina
about
this,
so
on
one
hand
we're
doing
that
open
source.
Cordless
drill
challenge,
that's
on
one
side,
but
let's
think
about
what
a
golf
cart
would
do.
A
I
mean
that's
a
thing
that
people
can
drive
in
and
driving
is
fascinating
kind
of
a
vehicle
of
some
sort,
and
if
we
make
it
an
open-source
solar
golf
cart,
there
could
be
a
compelling
package
that
includes
you
got
the
solar
energy.
You
got
a
calculations
of
energy
and
power.
You've
got
mobility
motors.
A
We
could
make
it
hydraulics
so
that
the
the
drive
is
hydraulic
going
to
hydraulic
motors,
which
are
which
is
one
low-cost
way
to
do
it.
So
an
interesting
concept,
but
let's
go
to
the
to
the
Gulf
of
presentation
and
I
want
to
go
through
that
and
I
do
want
to
actually
call
for
a
design
sprint.
This
Saturday
sometime
or
a
rather
Friday
or
Saturday
Friday
would
work
like.
Let's
say
you
know,
1:00
p.m.
or
so
so
we
might
want
to
try
for
day
like
Friday.
A
What
I
will
do
is
make
an
announcement.
We
do
have
a
design,
Sprint's
list
of
people
who
people
have
signed
up,
but
if
you
want
to
start
looking
at
this
document
here
do
take
a
look
at
that.
So,
with
the
existing
infrastructure
of
power,
cubes
hydraulic
motors
makes
it
a
low-hanging
fruit
kind
of
project
because
we're
not
trying
to
optimize
for
some
performance
like
torque
or
speed
or
anything.
It's
kind
of
like
low
low
speed
up
to
20
miles
per
hour,
which
is
legal,
golf
cart.
A
Thinking
about
I
mean
you
sure
my
screen
actually
yeah
yeah.
So
take
a
look
at
that
on
the
screen.
If
you
want
power,
cute
been
working
on
a
power
cube
for
a
long
time,
same
power,
cube
16,
horsepower
body,
a
body
of
the
golf
cart
about
5
by
8
feet.
Easiest
way
to
do
it
so
so
look
at
what
golf
carts
are
they
that's
what
they
look
like
they're
from
moving
around
you
could
look
in
different
different
forms.
A
For
us.
You
look
from
the
side
option.
One
option
two
option:
two
imagine
using
something
like
box
beam
tubing
like
on
a
tractor
well,
but
that
gets
kind
of
heavy.
You
don't
need
that
for
a
golf
cart.
So
what
if
we
use
angle
but
once
again
use
a
frame?
That's
similar
to
the
construction
of
of
the
3d
printer,
the
oacd
3d
3d
printer,
so
basically
in
a
much
larger
frame,
I
would
say
quarter
by
four
by
four
angle.
A
But
what
that
means
is
that
you're
making
big
panels
flat
panels
that
are
the
six
sides
and
then
welding
that
into
a
cubic
frame,
because
that's
the
easiest
way
to
work
with
angle,
to
make
it
perfectly
aligned
frame,
as
we've
been
finding
out
so
easy
way
to
do
a
frame
some
wheels
power
cube
now
power
cube
is
16,
horsepower
dimensions,
we're
looking
at
different
dimensions
to
kind
of
pick
off
dimensions
from
industry
standards,
so
five
foot,
seven
inch
height
and
so
forth.
So
if
you
look
at
look
at
standard
ways,
people
do
this.
A
What
does
this
thing
look
like
tires?
Look
on
that
graph,
CAD
and
other
online
sources
for
files
and
of
tires
in
step
format.
Add
to
that
some
hydraulic
motors
and
the
power
cube,
and
there
you
go.
Oh,
if
you
look
at
the
hydraulic
motors,
I
mean
I,
let
surplus
center
for
5.4
cubic
inches.
This
second
one
here
would
be
something
that
would
be
interesting
to
us
gives
us
just
about
the
right
speed
from
between,
like
14
to
28
miles
per
hour.
A
A
So
that's
where
we're
at
right
now,
but
would
like
to
see
if
we
can
keep
evolving
this
to
a
full
CAD
drawing
so
starting
with
a
CAD
like
here,
we've
got
some
of
the
part
of
libraries
wheels
a
bench
like
what
do
you
do
for
the
sea
do
a
simple
bench
and
so
far
it's
that's.
That's
that's
what
I've
done
for
a
little
bit
this
weekend
but
in
the
meantime,
also
working
on
a
3d
printer
and
the
book
and
stuff.
So
so
that's
my
report,
but
I
will
announce
this.
A
A
Let's
say
1:00
p.m.
on
Friday:
do
we
go
for
a
couple
hours
and
see
how
far
we
get
in
that
kind
of
time?
But
let's
see
if
we
can
start
assembling
that
in
freecad,
so
basically
work
work
up
a
apart
library
of
the
wheels
hydraulic
motors,
the
drawing
out
of
the
frame
and
detail
it's
a
basic
structure.
Actually,
so,
let's
see,
let's
see
where
we
get
on
that,
okay.
B
A
A
A
A
Yeah,
okay,
now
this
this
is
something
that
you
know
with
the
few
hours
of
good
design.
We
can
actually
build
this
out
pretty
much
readily.
As
far
as
on
a
power
cube.
What
we
can
do
is
we
talked
about
like
anytime.
A
Now
one
one
additional
thought
about:
the
cooler
now
use
a
dedicated
cooler.
What
if
we
welded
on
fence
to
our
hydraulic
power
unit
module,
that's
another
way
to
go,
it
might
be
a
decent
route
as
well.
If
we
don't
want
to
dedicate
it
a
dedicated
hydraulic
cooler.
Now,
of
course,
the
hydro
coup
is
going
to
be
more
efficient.
A
Like
you
know,
for
the
space
or
I
don't
know
it's
just
probably
gonna
do
more
heat
rejection,
but
for
a
simple
system,
I
think
just
welding
on
like
say
either
quarter
by
two
or
eighth
inch
by
two
fans
to
the
whole
surface
of
the
reservoir.
That
wouldn't
be
a
bad
idea
either.
So
we
might
want
to
try
that
I
guess.
We
would
have
to
look
at
some
basic
calculations
of
surface
area
and
heat
exchange
with
that,
because
we
know
that
a
dedicated
heat
exchanger
has
a
lot
of
surface
area
with
all
the
broken
out
fins.
A
Well,
maybe
we
can
get
an
idea
of
what
the
through
some
calculations
would
be
for
just
a
basic
fin
exchanger
like
just
like
I'm,
not
strudel,
4d
3d,
that's
printer,
the
tight,
narrow
extruder.
It's
got
the
aluminum
fans
on
the
extruder
part.
This
would
be
welding
steel
fence
to
the
hydraulic
reservoir
apart.
So
duction
I
know
that
some
places
around
the
world,
you
might
have
a
hard
time
getting
hydraulic
coolers
like,
for
example,
recent
conversation
with
the
Belize
crew.
A
They
said
that
they
make
their
own
coolers
because
they're
very
expensive
down
in
Belize
the
guy
who
stewarding
our
Brit
crest
down
there
so
yeah.
We
can
try
that,
but
this
would
be
good
to
move
the
power
cube
a
little
bit
forward
and
see
like
the
basic
first
implementation
of
vehicles
for
the
overall
global
village.
Construction
Set,
going
up
to
20
miles
per
hour
for
road-legal
no
license
required.
You've
got
to
be
like
16
years
old
to
drive
this
and
so
okay.
A
So
that's
that's
on
my
side
here
also
had
just
a
couple:
I
just
started.
Drawing
up
I
do
want
to
go
to
one
more
thing
on
that
thinking
about
3d,
printing
of
useful
products.
I've
been
doing
some
thinking
about
that
and
printing
and
and
Rob
filaments,
because
that's
absolutely
relevant
for
things
like
what,
if
you
want
to
print
rubber
tires
for
this
puppy
this
this
little
golf
cart,
well
completely
doable.
But
you
got
to
be
effective
that
at
printing
rubber,
so
I
put
up
a
document
called
the
OSC
3d
printer
extruder.
A
A
When
a
flexible,
filament
extruder,
you
see
here,
flection
extruder,
it's
called
I
was
like
wow,
that's,
probably
possibly
better
than
the
Titan
era,
which
is
optimized
for
flexible
stew,
but
it
boils
down
to
actually
like
I
I
need
to
just
test
the
speed
of
printing
with
flexible
filaments
here
using
the
existing
Titan
arrow.
So
you
take
a
take
a
look
at
the
working
document
there.
What
I
have
on
the
screen?
A
A
A
A
A
A
You
can
get
into
the
details
of
what
the
hardness
of
rubber-like
filaments
is,
but
if
it's
as
soft
as
a
rubber
band,
you
might
you
might
kind
of
think
well
yeah.
You
can
push
a
rubber
band
down
from
the
back
into
an
aperture,
so
there'll
be
limits.
So
we
don't
to
shore
them
up
the
distance
as
much
as
possible,
but
you
can
see
the
look
an
extruder
there
up
in
them.
A
That's
a
contribution
from
Eric,
not
not
colander,
but
another
Eric
on
the
wiki,
the
flexion
is
gonna
closes
up
that
gap
and
I'm
thinking.
It's
like
wow,
interesting.
Let's
we
might
want
to
design
another
extruder.
That's
that's
closing
up
that
gap.
I
was
thinking
about
using
these
gear
down
steppers,
because
the
things
about
this,
the
tight
narrow
this
big
wheel,
is
a
gear
down
wheel
from
the
stepper
motor
stepper.
Motor
shaft
is
let
me
label
that
right
there,
the
stepper
motor
shaft
is
there.
A
For
the
shaft
is
under
the
driving
is
bigger
gear
for
like
a
three
year,
four
I
don't
know
how
much
five
hold
gear
down,
or
so
you
need
a
gear
down.
So
if
you
want
to
simplify
the
extruder
proper
use,
the
use
a
gear
down,
stepper
motor,
you
can
do
that.
Maybe
we
can
use
regular
motors
and
planetary
gear
3d
printed
planetary
gears
as
the
gear
down
cause.
You
can
print
planetary
gear
downs,
pretty
well
using
3d
printing,
but
anyway,
just
started
thinking
about
what
the
optimal
extruder
would
look
like.
A
That
can
handle
first
of
all,
three
millimeter
filaments,
because
the
collection,
filament
extruder,
deflection,
3d,
printer
extruder,
that's
point
one
point:
seven
five
millimeter!
So
once
again
we're
off
the
shelf.
The
best
ever
you
can
get
for
flexible
filaments
is
the
Titan
Aero,
and
this
is
what
you're
using
because
we
want
high
industrial
performance
for
all
kinds
of
filaments.
But
it's
I
just
noticed
like
this
part
here.
The
distance
between
the
drive
and
and
metal
and
a
flexion
avoids
that.
A
So
we
might
have
to
design
our
own
like
where
the
drive
is
like
right
next
to
the
metal,
see.
But,
given
that
the
arrow
is
100,
bucks,
I,
don't
know
we
might
have
to
start
building
our
own,
we'll
see,
definitely
something
for
the
longer
term,
because
we
optimized
for
filaments
they're
flexible
for
printing
wheels
of
of
our
golf
cart.
So
that's
just
some
considerations.
A
There
I'm
thinking
about
what,
whereas
the
standard
film
into
goes
up
to
three
millimeters
like
what
about
even
thicker
filament,
so
it's
easier
to
push
that
through
or
you
can
print
larger
objects,
it's
easier
to
talk
about
thicker
filaments,
it's
easier
to
on
the
production
cycles.
If
we
talk
about
making
your
own
filament
using
a
filament
maker
like
the
Lyman
filament
maker,
it's
easier
to
produce
less
of
a
fatter
filament
and
more
of
a
thinner
one
based
on
like
tolerances
the
patter.
It
is
the
less
accurate
you
have
to
be.
A
That's
just
the
general
idea
we
might
want
to
go
into.
We
definitely
want
to
do
three
millimeter,
which
was
what
we
do
now.
Definitely
not
1.75,
which
were
flexibles
I
mean
sorry,
that's
not
gonna
make
it
for
flexibles
in
general,
I
mean
you
have
to
print
really
slow,
so
we
only
go
to
three
millimeter
and
possibly
develop
five
millimeter
as
we
go
along.
So
that's
a
brief
note
on
on
the
filament
extruders
for
3d
printers
with
a
tight
narrow
that
we
are
currently
using.
Okay,
I
think
I'll.
A
B
I'm
not
seeing
anyone
else
that
everyone's
been
having
problems
connecting,
but
my
my
user
interface
is
really
flaky
and
people
keep
popping
in
and
out
and
so
on.
So
I
don't
know.
Maybe
we
need
to
do
it.
We
start,
but
I
think
we
might
have
lost
everyone
else.
I'm,
not
sure
that
it
look
like
reconnect
and
Jen
was
having
audio
issues.
Oh.
A
A
B
B
A
I
did
not
comm.
Let's
talk
about
that,
a
little
bit
so
yeah.
So
that's
that's
the
final
version
we
do
want
to
print
yeah
I
can
go
right
after
this.
I
can
just
put
it
on.
Oh
and
you've
got
that
you
emailed
me
the
STL
file
right.
So
that's
yeah,
I'm
gonna
use
yeah
I'll,
just
print
it
out
right
after
the
meeting
I
mean.
A
B
Just
fix
some
of
the
other
other
shapes
to
try
to
make
it
print
better,
hopefully
but
yeah.
Hopefully,
that's
strong
enough
for
a
prints.
Well,
I,
don't
know
what
settings
will
be
good
for
that,
but
I
suppose
it
actually
does
it
hopefully
contain
too
much
plastic
there
in
some
ways
it's
pretty
tight
between
all
the
holes
and.
B
But
I
found
some
good
examples
of
scripts
and
macros.
That
help
me
understand
some
of
that
better,
and
mostly
it's
just
a
matter
of
reading.
You
know
a
lot
of
the
Python
in
in
free
cat,
the
methods
and
all
that
stuff.
That's
in
the
that
kind
of
already
referenced
in
the
Python
for
free
CAD
programming,
I
think
it's
pretty
cut
programming
101!
That
kind
of
stuff
this
lots
of
good
links
there
and
I've.
B
I
should
add
those
to
that
page
somewhere,
so
different,
macros
and
examples
of
how
to
you
have
to
generalize
the
macros
electrum's,
the
macros.
Don't
don't
work
and
they'll
repeat
something,
but
because
the
code
is
specific
to
whatever
you
you
know,
you're
doing
at
the
time
like
it'll
generalize
to
just
the
generic
sketch
names
or
the
internal
variables
are
always
some
generic
thing
that
it
names
in
the
code.
B
So
to
write
a
macro,
that's
repeatable,
you
kind
of
have
to
go
back
and
figure
out
how
to
write
code
in
there
to
adjust
the
background
so
that
it's
more
Universal
and
it's
compatible
with
anything
that
you
might
want
to
do.
Make
it
repeatable,
but
mostly
I,
also
looked
a
lot
of
stuff
to
figure
out
assembly
options
for
free
CAD,
but
I
think
I've
talked
about
that
before
I
still
don't
find
anything
better
than
assembly.
Stuff
might
be
better
than
assembly
two,
but
it
has
the
same
issues
I.
Think,
honestly.
B
So
it's
kind
of
better
to
keep
things
with
the
standards
we
have
I.
Guess
on
that,
maybe
until
till
something
gets
finalized
and
I,
don't
know
if
that's
gonna
happen
when
they
finalize
freecad,
maybe
not
point
one
seven,
maybe
point
one
eight
who
knows
so
mm-hmm
just
speculate
on
that,
but
the
assembly
does
seem
to
take
more
time
than
some
things.
I
mean
it's
easy
to
draw
parts.
B
B
A
Considering
putting
on
a
PV
panel,
because
thus
the
16
horsepower
Duramax
has
like
one
or
two
amps
of
charge,
so
it
wouldn't
be
able
to
run
a
cooling
fan.
That's
that's
an
issue,
and
then
we
could
have
like
a
real
electrical
like
lights
and
other
stuff
yeah.
So
solar
panel
on
top,
would
be
a
decent
idea.
B
A
A
Not
sure
there's
there's
two
types,
one
a
16
horsepower,
the
other
one
is
18
horsepower
both
have
this
electric
start
option,
but
I
think
both
of
them
have
the
crappy
charging.
All
of
them.
Have
this
like
a
2
amp
charger,
so
that
wouldn't
be
enough
to
run
a
ham,
could
basically
charge
a
battery.
Possibly,
I
guess.
A
B
A
B
B
Think
that,
from
what
I've
looked
like
on
the
assembly
in
general,
it
looks
like
other
parts,
and
things
will
clear,
but
sometimes
there's
been
different
arrangements.
I
know
on
the
axes
or
the
way
that
the
extruders
in
different
parts
have
mounted,
but
I
think
everything
clears
on
this
just
by
looking
at
it,
but
I'm
gonna,
add,
of
course,
I
think
a
bunch
more
things
to
the
simply
some
of
the
smaller
parts.
A
B
Yeah,
there's
a
bunch
of
a
little
stuff,
I
guess
in
the
part
library
to
catch
up
on
I
haven't
detailed.
Some
of
those
those
are
the
parts
already
exist,
I
guess
they
need
to
be
added
and
I.
Think
I
think
the
length
on
that
on
the
axis
is
fine,
so
she
just
and
axis
it's
the
same.
I
guess
there's
some
parts
that
are
not
listed
on
that
part
library
like
well
the
bat
hole.
Oh
no,
the
pen
they
had
the
print
board.
Oh
bad
holders
listed
there.
B
B
Order
which
I
will
be
a
little
different
for
this,
probably
in
some
ways,
but
I'm
just
trying
to
figure
out
what
ways
it
might
be
different
that
there's
gonna
be
a
little
just
probably
assembly
order,
complications
because
of
the
clamp
and
the
way
it
goes
together.
Stuff
might
have
to
be
bolted
together
in
a
different
order.
It's
a
little
bit
different,
but.
B
A
B
B
A
A
A
B
The
frame
matters
which
seems
to
be
some
of
that
I
noticed
in
the
process
for
the
other
mid
printer
in
the
manual
I,
noticed
a
lot
of
stuff
about
keeping
things
even
and
the
rod
lengths
and
all
that,
so
that
most,
that
should
be
the
same.
It's
just
yeah
a
little
more
different,
squaring
practices
for
the
tubing
frame.
A
A
B
B
The
plastic
lighter
yeah
I'm
curious
about
the
filling,
if
that's
necessary,
I,
think
well,
I,
think
John
John
was
doing
the
PVC
printer
and
I've
seen
other
examples.
People
use
PVC
for
printers,
so
it
can't
be
too
Lackey
didn't
stiffness
I.
Suppose
that
mainly
affects
speed,
which,
for
a
small
printer
for
a
lot
of
people,
is
not
really
an
issue
right.
A
B
B
A
As
far
as
the
clamps
going
on
to
the
frame,
they
also
serve
to
reinforce
the
frame
a
little
bit.
So
that's
good
for
small
printer.
It
might
be
just
the
perfect
case.
You
know
you
have
a
four
six
by
six
inch
print
area
and-
and
you
don't
really
mind
going
too
slow
or
you
can
just
as
we
said,
just
completely
reinforce
it.
You
can
put
a
plate
across
one
of
the
square
sides
which
will
completely
stiffen
up
aside.
A
B
A
A
And
I
also
asked
John
about
high
high
temperature
pumps.
It's
one
of
the
things
I
looked
at
as
linear
solar
concentrator.
Is
that
you
look
at
my
log
linear,
solar
concentrator,
we're
looking
at.
Can
you
actually
get
saturated
water,
which
means
water
above
a
hundred
degrees
Celsius
through
a
simple
solar
concentrator
system,
and
we
were
looking
at
okay?
What
about
pumps?
How
do
the
pumps
look?
A
A
Solar
concentrator,
because
there's
I
did
some
calculations
on
that
DIY,
solar
concentrators,
since
that
was
yesterday,
so
oh
I,
see
France
did
a
did.
A
model
back
in
thing
was
like
twenty
sixteen
or
seventeen
and
there's
a
parabolic
tubular
collector
from
this
Canada
guy
in
this
parabolic
tube
section
right
here
he
was
do
using
evacuated
glass
tubes,
but
looking
into
evacuated,
glass,
tubes,
they're,
typically
one
end
open
and
we
can
probably
find
two
ends
open,
but
we
need
to
find
them,
but
not
to
ease
mixes.
So
I
was
looking
at
okay.
A
What
happens
when
you
do
solar
concentration
upon
a
black
tube,
just
one
inch
black
pipe
at
one
at
one
son?
It
goes
up
to
ninety
degrees,
Celsius
belt,
based
on
Boltzmann
boatman's
law,
the
Sigma
T
to
the
fourth,
the
the
radiation
from
a
blackbody.
You
end
up
with
ninety
degrees,
but
if
you
have
three
Sun
concentration,
the
max
goes
up
to
above
200
Celsius,
which
is
good.
So
given
that
system
like
shown
in
a
parabolic
tube
part
here,
this
is
under
DIY
solar
concentrator.
A
If
you
look
at
that,
that's
like
probably
like
18
fold
concentration,
so
yeah
we've
got
plenty
of
temperatures.
So
as
long
as
we
can
pump
that
water,
we
can
get
saturated
water,
which
means
water
above
a
hundred
degrees
Celsius,
which
means
it
builds
up
pressure
and
and
and
contained
in
a
thing
like
a
propane
tank
at
eighteen
atmospheres
that
can
be
nighttime
power.
Storage.
That's
that's
a
mouthful
there,
but
you
have
to
understand
saturated
water,
which
means
water
above
100
degrees,
C
to
competitor
2
batteries.
A
Peres
parabolas,
with
a
bunch
of
one-inch
pipe,
could
easily
get
you
over
200
Celsius
with
18
fold
concentrations.
That's
pretty
good
news
and
I
just
wanted
to
point
it
out
that
that's
something
to
potentially
well
I
mean
we're
doing
that
in
a
global
village.
Construction
Set.
So
it's
just
providing
the
background
theory,
but
the
numbers
at
least
look
good
and
it's
worth
replicating
what
the
guy
in
the
parabolic
tube
length.
Let
me
just
click
on
that
this
system
here.
A
A
So
that's
that's
something
to
look
at
okay,
but
that's
that's
a
side,
ed
report
and
some
of
the
research
I've
been
doing
in
the
background
in
the
meantime
here
with
John
printer
to
see.
If
we
get
any
decent
reasons,
I
guess
would
have
to
do.
Somethin,
yeah,
I,
don't
see
what
kind
of
quality
is
getting
pissed
up,
but
right
now,
I
can
see.
I
mean
it
look
hard
to
give
a
stable
right
now
as
it
is,
but
he
might
feel
slow,
you'll
get
decent
prints
so
he's
doing
some
decent
work
there.
A
Okay,
so
the
clamp
we're
gonna
print.
Let's
just
take
a
look
at
Nathan's,
partly
I
asked
Nathan
to
do
is
put
these
things
into
a
part
library,
and
that
is
good,
because
now
we
see
these
basic
elements
that
have
the
magnet
holes
where
you
do
a
sandwich.
The
background
story
to
this
is
the
link
I
sent
the
Nathan.
A
What,
if
the
magnets,
you
have
a
double
sandwich
and
putting
the
magnets
inside
so
that
you
don't
even
have
to
glue
the
magnets
in
which
is
actually
a
good
idea,
because
they're
kind
of
thin
finicky
about
doing
it
so
do
double
sandwiches
with
magnet
holes
and
make
those
the
plates
that
use
very
different
part
library
parts
for
the
CD
go
home
home
model.
So
we
can
trend
that.
A
A
A
B
A
B
B
A
A
You
probably
don't
have
to
have
any
cooling,
because
it's
cold
enough,
but
in
a
90
degrees
summer
you
don't
need
you
will
need,
saw
yeah,
and
so
it's
got
a
big
performance
deal,
because
I
think
we
can
do
well
with
some
strong
fans
and
some
thins,
but
other
part
is
cost
because
it
would
cost
you
like
for
a
two
inch
by
two
inch
steel
plate
on
a
steel
bar.
That's
pretty
inexpensive
compared
to
cooler,
which
is
a
hundred
bucks
plus
the
fittings.
So
that
might
be
an
advantage
to
have
the
cooling
right
on
a
tank.
A
B
You're
saying
so
much
bar
I
think
I
think
the
plate
that
was
playing
for
that
pair.
That's
been
used
for
the
tanks
before
was
maybe
like
almost
1/4
inch
thick,
adding
fins
to
the
tank
or
to
try
to
just
make
some
other
cooling
apparatus
that
way.
I
guess
if
you
used
sections
of
pipe
I,
don't
know
the
cost
of
hard
steel
piping
and
using
that
to
connect
some
things
and
then
putting
some
cooling
off
of
that
kind
of
making
your
own
cooler
necessary
that
that,
but
that
adds
a
lot
of
complexity.
B
I,
seam,
welding,
some
thin
sheet
metal
for
fins
onto
things
is
that
that's
just
a
bunch
of
tack
welding
that
that
could
add
a
lot
of
welding,
but
that's
probably
less
of
an
issue.
I
guess
in
sheet
metal,
I
guess
isn't
hard
to
cut
by
hand
or
or
if
you
have
a
torch
table.
It's
pretty
easy
to
do
to
do
fins
or
something
just
strips
of.
A
A
B
A
Just
I
just
did
it
right
now,
but
look
at
this
that
looks
pretty
pretty
exotic
yeah.
This
is
what
you
have
this
top.
One
is
what
you
got
on
the
wiki,
so
yeah,
that's
no
still
there,
but
yeah
I
mean
that
what's
down
here,
let's
do
it.
I'll
set
it
up
right
now.
So
yes,
that
could
work.
I
mean
it's
pretty
thin
on
this
section.
So
well
it's
pretty
fat
here.
This
is
a
case
where
oh
yeah
is.
A
Yeah,
actually,
you
know
what
we
could
do
here
actually
in
this
production.
Engineering
would
be
like
make
a
fat
law
and
very
low
in
and
fill
so
here
where
it
has.
The
thin
part
will
be
like
a
hundred
percent,
but
in
this
part
it
will
be
like
the
lower
percent,
but
yeah
I'll,
just
printed
regular
for
now
see
how
it
yeah
no
messing
around
just
yeah,
like
you
got
shell
thickness
yeah.
B
A
B
B
Well,
actually,
all
the
parts
where
it's
thin,
where
the
bolt
goes
through
and
especially
at
that
nut
recess,
it
was
so
thin.
I
was
kind
of
concerned.
How
well
a
a
large
if
the
extrusion
is
diameter
is
pretty
high.
I
was
sure
how
well
that
would
print
or
if
it
would
get.
You
know
enough
layers
to
be
strong.
A
B
A
A
A
I'm
not
doing
gain
on
this
one
we're
not
really
getting
into
volcanoes.
Don't
you
have
just
regular
one
but
yeah,
so
I'll,
try
printing
this
and
see
how
it
goes.
I'll.
Do
that
like
right
now
and
I'll
announce
the
I'll
make
a
call
for
the
the
Friday
1:00
p.m.
on
the
design
sprint
on
the
open
source.
Golf
cart
run
by
a
power
cube
and
then
later
a
solar-powered
cube
right
now,
we'll
keep
it
simple
with
regular
functional
stuff,
but
but
you
can
make
this
solar,
which
would
be
a
good
challenge
for
student
projects.
B
A
What
I'm
thinking
is
yeah
quarter
quarter
inch
so
basically,
essentially
a
frame
light
of
the
d3d
and
a
power
cube
six
flat
plates
they're
gonna,
be
quarter
by
four
for
the
thickness
of
the
web,
so
be
that
effectively
4
by
4
angle
and
I.
Think
they'll
be
plenty
strong
for
and
lighting
up
still
so.
Calculations
on
weight
of
that
would
be
an
order.
Yeah.
A
B
B
A
A
A
A
B
B
A
B
Yeah
I
think
it'll
be
pretty
quick
to
re-edit
the
power
cubes.
To
think
about
that
yeah
I
suppose
for
the
golf
cart,
this
use
it
may,
it
may
need
to
be
there's
the
shape
may
need
to
be
really
different
or
just
but
definitely
separating
the
engine
and
the
tank
and
the
the
kind
of
redoing
the
power
cubes
that
way
without
the
engine.
Just
having
the
tank
separate
and
the
cooling
with
the
tank
I
guess.
A
No
separate
tank
power
cube
and
separate
engine
so
that
the
engines
are
super
swappable
yeah,
because
they're
they've
been
like
unless
we
start
making
our
own
like
and
I,
think
I
mentioned
the
Champa
diesel
and
we
got
to
build
up
our
precision
machining
infrastructure,
which
is
not
there
yet
yeah
we,
but
we
will
have
that.
That's
in
the
next
eight
years.
Time
stick
in
2028
next
nine
years
on
that
decade,
but
we
got
to
get
all
that
in
place.
Precision.
A
I,
just
a
general
rollout
is
finishing
off
the
3d
printer,
so
right
now
I'm
into
the
just
like
some
little
upgrades
like
one
of
the
upgrades
you
mentioned
the
volcano.
Well,
we
haven't
been
using
the
volcano,
so
I'm,
adding
that
just
freezing
that
version
is
a
basic
version
and
then
I
got
to
move
on
to
the
torch
table.
A
A
Anyway,
we're
not
there
yet
on
that,
so
for
now,
we'll
just
do
simple
in
the
Stone
Age
just
well,
but
for
the
frame.
Actually,
it's
convenient
to
use
quarter
by
four
flats,
because
they're
cheap
accessible
and
we
can
weld
them
into
the
very
large
frame.
Just
like
I
did
the
large
frame
of
the
one
cubic
metre
3d
printer
from
a
quarter
byte
half
flats
here
we'll
use
quarter
by
four
clots
to
make
a
huge
frame
out
of
six
sides.