[Music]
people
are still trying to wrap their heads
around what it cost
to 3d print and so we're just going to
go over a couple things that'll help you
understand that a little bit better
the cost number one factor that drives
the cost
is the mix that you're going to use you
have mixes that are 600 psi you have
mixes that are 50
000 psi obviously when you start
adding synthetic fibers different things
like that you're going to
increase the cost of your mix there's a
motivator to have stronger mixes because
with the right mix and the right formula
you're able to
[Music]
get away from rebar which is heavy
costly
and you don't have to peel for the wall
solid with concrete afterwards
so um we've done
tremendous amounts of testing in fact
most of the work that we have done
hasn't been in building a printer it has
been watching walls fall down every day
with different types of mix so that we
can get the math and the algorithm
of how that mix is affected by
wind humidity temperature
and a lot of other factors so
the mixes are all sent down and they're
tested
they give us a 28 day report
of the curing time and then
they'll take these separate the
plastic off it and they will do a break
test
and they will come up with strength
they'll tell you what
psi we're hitting anyway so that's
that's one factor but let's just take a
mix let's say uh
a cinderblock's 1800 psi let's just take
a mix that's uh
about 24 2500 psi let's just pick that
mix
okay bear in mind there's there's tons
of different mixes
and there's a hundred different
additives but we're just going to pick
uh you know 2400 psi
so you're printing you know
much more than what the strength of a
cinder block so there shouldn't be any
uh building department issues
and when we're talking about printing
[Music]
oh is it gonna pass code is it gonna
pass code guys you can build
a house at a polystyrene okay plastic
foam uh and
build your walls with that put your
rebar in it pour a solid with concrete
so if you use the printer for nothing
more than just printing your little
polystyrene block wall your your uh
forms let's say uh and then putting
rebar in it and filling the solid with
concrete
there's no code anywhere that we can't
pass
uh cinder block same thing okay we print
uh most of the time uh
50 to 100 stronger than a cinder block
if you're curious about that a little
bit look at the
video where we're shooting guns at uh
cinder block
versus our walls okay on our walls the
bullets bounce off the wall
on cinder block it shatters so
just to just simplify this don't make it
too complex right now
pretend we're just printing polystyrene
uh block okay
no structural strength whatsoever
your structural strength will come in
with the rebar and pouring in solid
okay that's not what we do but let's
just simplify it let's
take it back to just printing a dang
foam wall okay that'll help you a lot
so what you're getting with the concrete
printer is the ability to
print at twice the strength of cinder
block
without any molds forming
set up anything print in place
and give customers designs they have
never ever fathomed
never even could imagine architects like
to do this stuff but every time they do
and the subcontractors come in to start
bidding this stuff
it's too expensive and then they get
back to just fall asleep
square wall straight walls
you know square angles and corners
architects want to do this kind of stuff
now they can't
so okay let's talk uh about wall design
for a little bit
you're an engineer based on your code on
a bearing wall
non-bearing walls he has to decide is he
going to print a wall that's you know 6
inches wide 8 inches wide 12 inches wide
is he going to put internal mortar
support in it and if he is
how tight is that mortar support because
that will drive the cost of this wall up
we know that a wall that's printed like
an inch by an inch
um eight feet tall
the cost for the cost per cubic
inch is point zero zero five
a half a cent a cubic inch at about
2 400 psi okay
then you can go up from there okay
obviously
uh you could pour a hollow wall put
rebar in it
and pour it solid concrete or you can
print a wall with internal mortar
support
put rebar where you want because you're
isolating cells now and just fill these
other areas
um there's i mean there's lots
of different ways and makeups of a wall
so here's a here's a hall
wall okay ideally you want to stay
hollow
because if i can stay hollow i can drop
my
electrical lines in my plumbing lines in
and i'm not
drilling hundreds of two by fours
okay so this is going to make your
electrical and plumbing
a lot less expensive as well okay so
i mean out okay
uh it's strong okay nobody has to worry
about this stuff being strong
it can be as strong as you want it to be
and
without rebar and mortar support but
for your first project you're probably
gonna say you know what let's give the
building
i mean i know a lot of these guys
haven't opened a book in 20 years so
they're probably not up to speed on the
new strengths
and new technology with just concrete
with just
cement based uh mixes
so uh
you can see this ones okay if you look
down on this more
it's wider than this one your structural
engineer is the one that has to decide
that are we to go completely hollow
are we going to go hollow with rebar are
we going to go hollow with mortar
support like i just showed you back
there
okay now when you're trying to figure
out what does that cost a square foot
okay if i have a wall okay like this
that's a hollow wall okay hollow
okay versus this one okay
this one has
more support internal motor support
printed in the middle
and they're like okay well how much how
much is the cost if we have internal
motor support
hell sakes i don't know what is what did
your engineer say you have to have
when you can tell okay because this is
also
a hollow wall okay
you see the difference if you're
printing this
at one inch okay if if this is actually
this wide one inch okay
then which it doesn't have to be it can
be an inch and a half
it can be two inches your mortar support
in the middle
and same thing with your wall here's a
hollow wall
okay uh is it going to be four inches
is it gonna be six inches eight twelve
inches how wide is it going to be
once your engineer has told you okay
we're going to do this wall
because of the calculations and the
strength back from the lab
with those calculations i've determined
we can build a wall and it will surpass
everybody's requirements for a bearing
wall or
interior walls or exterior walls okay
but getting back to cost again you have
to know a couple things
so
[Applause]
um
okay one side of the wall second side of
the wall
one side of the wall second side of the
wall that's what i'm drawing right here
okay
because now the question is is this
going to be one inch
three quarter inch 1.25
1.5 2 inch
have to know once you have that then we
can figure out what the cost is for the
hollow one
okay when we come back in here
and do this
okay right here okay
what is it same thing is it one inch
quarter
okay when you're done you can figure out
how many cubic inches you have
for linear foot of wall and you'll know
exactly what your cost is going to be
but i can tell you for a wall like this
hollow wall
about inch and a quarter on both sides
your cost
um for this wall is about 11
a running foot no rebar no back filling
just a wall like this hollow
inch and a quarter on both sides you're
going to be at about
11 a running foot okay
so hopefully that clears up and explains
some of the
you know i realize it's a new technology
it's hard for people to get their head
around it
but if you if you think about it it's
kind of not okay
it's a matter of
[Applause]
breaking it down into cubic inch how
many cubic inches of print
of print do we have how tight are we
doing this
okay are we doing it on 12 inch centers
like this
okay are we doing it on
those almost look the same oh we went
from the center okay
or are we doing it on eight inch okay
some people have asked about okay i want
it to look just like a
uh cinder block wall well i i wouldn't
okay it'd be not necessary
so if i have a
[Music]
let's say six inch
okay then i've got a
i print the parameters okay
then i got to come back and come across
here
and down there and over here
and over here inside the wall
what is that done well okay i have not
only do i have just
the wall cost to print the perimeters
now i'm duplicating it
right here so that adds
uh plus i have my horizontals i've got
my verticals that are running parallel
with my wall
now i have my horizontals you got to add
those all up
but i mean why would you try and print a
wall that looks like a cinder block
when you can do this i can make these as
tight as i want
okay again
double the the strength of a cinder
block wall in the first place
but if you know what your square hole
square peg
this is just the way i want to do it
knock yourself out
but that costs a lot more
okay then this does and that's why when
you look around the world
this is what people are doing so but
if this is what you're going to do same
thing figure out how many linear
feet you have break it down into cubic
inches once you know how wide you're
printing
and voila you're there so
this is the stuff we talk about every
day actually i mean if you look around
right now we have a university from
arizona here for their
their training and uh this is one of our
classrooms
that uh we work in and
we talk all the time okay
talking about path height because the
next big question is well what's the
labor gonna be
okay well it depends are we are we
printing every single pass
at an eighth inch okay
are we printing our passes at one inch
what mix are we using stronger mixes i
can print faster i use weak mixes and
print too fast what happens
okay the base the thing falls over we
have lots of experience with stuff
falling over
okay two and a half three years of
watching cement fall over fall over fall
over
you want to get some other ideas okay
here's a wall we had one of our classes
print look at this wall it's disgusting
it looks a lot like a lot of the other
walls you're seeing out there right now
okay what happened here
what happened here okay this
what happened so
different mixes different print speeds
uh different pump speeds give you
different effects
we don't want your crap looking like
this you know most everybody out there
they won't show you printing in a wall
from there up to here in one pass
okay they print this high they let it
dry
heaven forbid they try and go this high
it might fall over okay
then they print this high again not
that's super safe it's just super
unnecessary
we print from there we print to there
and
it is all done in one pass and then
while this is
while this is cured down here at the
bottom we actually get on it
and start finishing it so that when
we're up here
okay when we're done it looks like this
smooth wall the opposite side it looks
like stucco
so the type of mix that you use will
determine the speed at which you can
how much you print in each pass okay
if i'm going an eighth inch quarter inch
versus an inch
i mean there's four times just to get if
i print an inch
four times faster than if i print a
quarter inch right yep
exactly so anyway
hopefully that answers uh some questions
for you
uh we're just keep trying to put more
videos online that will
address what seems obvious to us we've
been doing this a long time now
but it isn't so obvious and so that's
why this
video is here and while we're making it
right now because sonia says she's
getting tired of answering the same
question
over and over in any case uh try and
watch all of our videos
we know it's easy this isn't maytag okay
this isn't dell computer we don't make
tens of thousands please don't call me
and
well what's the life expectancy of the
printer
hell says call around first of all you
can't get a hold of anybody
second of all do you really think that
there are that many printers that have
been printing for four years that
anybody could really say that
now we can give you our best guess if
your square hole square peg
let me just stop you right there and
tell you hang up the phone
call back in three years we'll give you
everything you want
we've been doing this for three years
but this this isn't a square hole square
peg
thing and so there's certain
personalities that's who they are and
that's the way they are
you know in the nicest way
call somebody else
what you're going to become a part of is
a family
of entrepreneurial like-minded people
that realize they're part of the
solution they're not going to be part of
the problem
they're all working together they're
trying to help each other uh
the excitement level is palpable with
our customers
so anyway we welcome you down here
there is quite a thing list of things
that you have to do to get here
before we can meet with you but we we
welcome you here we do welcome your
calls
the only time we get a little bit
frustrated is if you are calling and
asking about stuff that we have already
answered if you go online you'll see
i've offered more information more
videos
that get into the specifics then all the
rest put together
plus you can actually speak to us so uh
watch our videos please we beg you so
that when we're finally on the phone
with you we're talking about stuff that
matters we're talking about
uh details that we're unwilling to share
until we have non-competes and mdas in
place
so that would just that helps us a
tremendous amount uh
watch our videos please read and pay
attention to the stuff that we send you
once you register
uh and uh outside of that
it's it's just it's fun as heck we love
the people that we are meeting with
the people that understand construction
they understand engineering
or have somebody on their team that does
they understand real estate they
understand
submittals building departments uh
architects engineers
a lot of people oh this is going to be
great i'm going to get a contractor's
license i'm going to start a company i
want to buy one of your printers i'm
like oh brother
okay it's a pipe drink okay i can't
instill into you the
years and years of experience that these
master craftsmen and contractors and
general contractors have
i can't teach that there's universities
i mean
four years for a construction management
degree so i can't teach that in a
three-week training course by the way
our training course is three weeks
you have to send a print crew of three
people and they'll be here
three weeks uh printing and printing and
printing
but uh yeah to those who who
do have that experience or at least have
those that team
uh when they come here they always buy
the other guys
they're afraid of their own shadow what
is the building department says no
and you know a building partners says no
structural engineer is the only one
licensed in the state
to sign off on plans and to say they
make me code once he does his job
okay they can't say no they can say i
don't understand it can you explain the
math
or whatever else but please understand
it is the structural engineer
that went to school for years and years
okay
that is the single authority for
drawing a set of plans take them to the
billing department
depending on what mix you're using and
what method you're trying to do
they're going to have some questions for
you part of the training you get here
but we don't teach structural
engineering we don't do your house plans
for you
we sell the printer and when all that
other stuff is done our printer will
what has been designed kind of like
epson okay they sell the
the printer they don't give you the
graphic artist that will create preview
pictures to come out of it so
we are excited to see you hope that
answers some questions i know i'm
talking way too much on this one
i feel sorry for you guys uh get some
adderall and some ambien you'll probably
need both of those in the course of
the next few months as you're trying to
uh uh
just absorb all the exciting
opportunities
and you know that that this is opening
up this is changing
a lot of stuff so that being said thank
you guys we look forward to seeing you
soon
The two biggest questions we are getting: does it pass code and how much does it cost? In this video, we go over the topics of passing code and analyzing printing costs to eliminate any doubt that MudBots is the #1 solution in the affordable housing crisis. TRAINING is now 5 weeks in Utah and 4 weeks once returning home.
Want to watch more videos? Register now to have full access to our website.
No comment yet. You need to be logged in to add one.