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3D PRINTED Tiny Home ADUs | Mighty Buildings - YouTube
Channel: Belinda Carr
[4]
mighty buildings a construction
[6]
technology company
[7]
based in oakland california came on the
[10]
scene in 2020
[11]
when they showed off their unique 3d
[13]
printed synthetic stone homes
[15]
they aim to create beautiful sustainable
[18]
and affordable high quality homes
[20]
using advanced materials patented 3d
[23]
printing technology
[24]
and robotics automation instead of using
[26]
concrete mighty buildings uses a
[28]
proprietary mix called lsm or light
[30]
stone material
[32]
it's a polymer binder and mineral filler
[34]
that instantly hardens when exposed to
[36]
uv light
[37]
it's very similar to corian a solid
[39]
surface material made by dupont
[42]
while corian countertops are made by a
[44]
reductive process
[45]
lsm synthetic stone is made by an
[47]
additive process
[49]
its strength is comparable to concrete
[51]
but it is a quarter of the weight
[53]
and a much better insulator the print is
[55]
scanned to verify the final dimensions
[57]
and curvature
[58]
it can also be milled to create a smooth
[60]
finish mighty buildings have completed
[62]
and delivered
[63]
6 mighty mods and are currently
[65]
manufacturing 30 more
[67]
the mighty studio which measures 25 feet
[69]
by 14 feet
[70]
and has an exterior footprint of 350
[73]
square feet
[74]
costs around 185 000 the one bedroom
[77]
mighty duo b
[79]
which measures 28 feet by 25 feet and
[81]
has an exterior footprint of 700 square
[84]
feet
[84]
costs around 250 000 the two-bedroom
[88]
version which also measures 28 feet by
[90]
25 feet
[91]
costs around 265 000 every unit has a
[95]
full kitchen bath
[96]
quartz countertops oven refrigerator
[100]
dishwasher microwave washer and dryer
[104]
i recently visited their factory in
[105]
oakland and got a behind-the-scenes look
[108]
of their units from the skeleton to the
[110]
finished product
[111]
the factory tour gave me a whole new
[113]
understanding of the company
[114]
and the construction technique it also
[117]
reinforced my belief that the realm of
[118]
3d printed construction
[120]
is filled with hyperbole and
[122]
misinformation if you haven't watched my
[124]
last video on the topic i'll link it up
[125]
here
[126]
i still can't believe it but yeah 3d
[128]
printed no this house behind me
[130]
was built using a 3d printer
[133]
no imagine this a giant 3d printer makes
[137]
this building that we're inside of no
[140]
there is no critical thinking
[141]
no analysis journalists and youtubers
[144]
are regurgitating lies to their million
[146]
plus
[147]
subscribers which cheapens the
[149]
technology in the long run
[151]
i had a very insightful conversation
[153]
with sam rubin
[154]
chief sustainability officer and
[156]
co-founder of mighty buildings
[157]
who was very transparent about the
[159]
company their core values and long-term
[162]
strategy are very inspirational
[164]
but those aspects have been drowned out
[166]
by the noise
[167]
so in this video we're going to break
[168]
that cycle of misinformation
[170]
and uncover the truths but before we do
[173]
don't forget to hit that subscribe
[174]
button to help me get to 100
[176]
000 subscribers first off this structure
[179]
that you've seen in youtube videos is
[181]
not the final unit
[182]
3d printing the entire shell out of
[185]
synthetic stone
[186]
was an unsuccessful experiment it's set
[189]
aside in the factory and it's a goal
[191]
that the company hopes to get to
[192]
eventually
[194]
it's not precise it has a rough finish
[196]
with obvious seams
[198]
and massive cracks in the walls for now
[201]
the structure is made of a traditional
[203]
heavy gauge steel frame welded and
[205]
bolted together
[206]
with light gauge steel used for the
[208]
interior walls
[210]
the 3d printed curve is a tiny
[212]
non-structural part of the unit
[214]
hidden behind drywall all the components
[217]
are manually put together
[219]
subfloor sheathing fiberglass insulation
[221]
on the ceiling
[222]
tyvek house wrap zip tape around the
[224]
windows radiant barrier poly iso on the
[227]
sides
[228]
and all the electrical plumbing and hvac
[231]
parts
[232]
other than that one curved wall the
[234]
current version of the building is
[236]
no different than traditional
[237]
construction last year they had an event
[240]
for tesla owners
[242]
and they marketed the unit as the tesla
[244]
of construction
[246]
fortunately they have since scaled back
[248]
their claims during their live webinars
[250]
demos installations and interviews
[252]
they now explain that there is one 3d
[255]
printed element
[256]
embedded in the wall they don't hide the
[258]
lsm shell in the factory
[260]
they are not ashamed that it cracked
[262]
they seem to use it as inspiration
[264]
and i find that transparency refreshing
[267]
next the unit is set to be well
[268]
insulated with an r value of 24.
[271]
if you watch my r value video you know
[273]
that double pane windows
[274]
have an r value of two so even if the
[277]
solid walls are r24
[279]
they are nullified by the expansive r2
[282]
glazing
[283]
i questioned sam rubin about this so
[286]
even if that is
[287]
an r24 the entire the unit isn't
[291]
no but so we've as you can see this much
[294]
glazing yeah we are not going the
[295]
prescriptive route
[296]
if we want the prescriptive route it
[298]
would i mean it would look like every
[299]
other
[299]
box with no windows because the title 24
[302]
does not treat small structures well
[303]
and there's work underway to try and
[305]
update it to create a small building
[307]
energy code that is does actually
[309]
address the needs of smaller units
[311]
but in the meantime what we've done is
[313]
we've identified every opportunity to
[314]
capture
[316]
points towards the efficiency okay so
[317]
the efficiency of our printed material
[319]
is a part of that but also the
[321]
fixtures we're choosing the appliances
[323]
we're choosing hvac system
[325]
we're using a hybrid water source heat
[327]
pump the next claim is that it prints a
[329]
home in 24 hours
[330]
the experimental 3d printed shell did
[333]
take
[334]
24 hours but that is not the product
[336]
being shipped out
[338]
also like i mentioned in the other video
[340]
3d printers print walls or a shell
[343]
not entire homes printing the curve at
[346]
the back of the unit
[347]
is quicker than manually framing it out
[350]
but assembling
[351]
all the other components from the steel
[353]
frame to the finished unit
[355]
definitely takes over 24 hours related
[358]
to this claim
[358]
is that it uses 95 percent less labor
[361]
hours
[362]
and 95 percent less waste than
[365]
traditionally built
[366]
homes now that's not with the current
[368]
version
[369]
but if they manage to print the entire
[371]
shell without wood or steel studs then
[373]
it could be true
[374]
all right now let's move on to all the
[376]
good things about this company
[377]
they make very strategic incremental
[380]
improvements
[381]
instead of single or multi-family
[383]
dwelling they started off with adus or
[386]
accessory dwelling units
[387]
why did you pick that industry out of
[389]
everything yeah so in california that's
[391]
starting in 28
[392]
laws passed in 2016 that went to effect
[394]
january 2017
[395]
and have there's been a series of laws
[397]
since then they've really streamlined at
[399]
the state level
[400]
the approval process for adus and really
[402]
made adu something that you can build
[403]
anywhere in the state
[405]
so that was a perfect nation so it's a
[406]
great niche market particularly because
[408]
the small size of adus means they're
[411]
difficult
[411]
for bigger builders and developers to
[413]
actually build because the overhead for
[415]
something that small just doesn't pencil
[416]
out generally
[416]
yeah and so it was a great opportunity
[418]
for us to enter the market
[420]
enter a niche market that's growing i
[421]
think it was over two billion dollars
[423]
last year already in california alone
[424]
wow isn't going back to that
[426]
too expensive for builders and
[427]
developers those who are who we've
[428]
always seen as our long-term customers
[430]
yeah and we'll still be going direct to
[432]
consumer and we love working with
[433]
homeowners and
[434]
the smile on their face when we hand
[435]
them the keys there's nothing like it
[436]
yeah
[437]
but to really have impact yeah we can't
[439]
be just delivering a unit here unit
[441]
there it's about how do we do 10 20 50.
[443]
500 at a time yeah and that involves
[445]
working with your bigger builders and
[446]
developers
[447]
and so the ada market was an awesome
[449]
opportunity to deliver some high quality
[450]
products
[451]
that meet a need here in california take
[453]
advantage of those
[454]
streamlined permitting but also
[456]
demonstrate to our future b2b customers
[458]
our ability to deliver
[459]
they also work very closely with
[461]
underwriters laboratory or ul
[464]
state and local officials to create
[466]
regulatory standards for 3d printing
[468]
their designs are approved throughout
[470]
the state of california
[472]
which speeds up the permitting process
[474]
all you need is a local permit for the
[476]
foundation and utilities
[478]
and a plan check for zoning purposes
[480]
we're doing a lot of work in the
[481]
regulatory side yeah
[482]
because it's so important i mean
[484]
building codes and you guys are
[485]
architects you understand the building
[486]
codes are written in blood
[487]
like they exist because things went
[488]
wrong and people have died and gotten
[490]
severely injured
[491]
and it's so important if we're bringing
[493]
a new technology cert especially one as
[494]
novel and unique as this
[495]
that we're doing everything possible to
[497]
demonstrate that safety and so that's
[499]
part of our incremental approach
[500]
yeah but it's also part of why we want
[502]
to create standards because if something
[503]
if someone else in space
[505]
builds a house and it collapses that's
[506]
not just going to impact them that's
[507]
going to impact all of us who are trying
[509]
to bring this technology
[510]
to the forefront according to sam rubin
[513]
none of the four founders come from a
[514]
construction background
[516]
so they approach this venture with
[518]
humility we believe in disruption
[520]
but we believe in disruption through
[521]
collaboration we're not trying to come
[522]
in and replace the legacy builders we're
[524]
not trying to come in
[525]
like an uber or someone and say and just
[527]
flaunt the laws and regulations
[529]
we're coming in and we're trying to say
[530]
hey this is what we're seeing this is
[531]
what we're thinking this is what
[533]
the technology we're bringing to the
[534]
table this is all the work we're already
[535]
doing on the regulatory side
[537]
what are we missing what do we what do
[538]
you see that we don't like
[540]
because we under like part of why we're
[542]
doing what we're doing is because we
[543]
didn't know we weren't supposed to
[544]
because none of us like none of the
[545]
founding team comes from construction
[546]
yes
[547]
which is a blessing because it allows us
[549]
to bring a beginner's mind yeah but it
[550]
only works if we're humble and that's
[552]
something that's been really important
[553]
to us is being
[554]
being humble recognizing there's a lot
[555]
we don't know there's a lot of
[557]
expertise in the industry that's really
[559]
useful another reason i'm intrigued with
[560]
this company is because they use
[562]
synthetic stone
[563]
or lsm instead of concrete i think using
[566]
synthetic stone gives them a leg up on
[568]
their competition
[570]
that uses concrete and will help them
[572]
get to their goal of carbon neutrality
[574]
by 2028
[575]
they intend to create lsm panels that
[578]
act as
[578]
air water vapor fire and thermal
[581]
barriers
[582]
sam rubin called them structurally
[584]
insulated panels on steroids
[586]
not enough people have heard of lsm so
[588]
when they look at this they think 3d
[589]
printing
[590]
they don't realize that us 3d printing
[592]
is a technology and you can use so many
[594]
raw materials to achieve the end product
[596]
so is there a lot of mix up between what
[599]
y'all are using and concrete and do you
[601]
have to educate the market on that
[603]
we do yeah so we definitely have a lot
[604]
of people who when they first reach out
[605]
to us
[606]
they're like oh i've heard the three
[607]
you're using concrete right i'm like
[609]
actually no yeah and i get to it's a
[611]
great opportunity to explain how we use
[613]
a light
[613]
material that cures using light the
[616]
advantages of that in terms of being
[617]
able to print different forms and shapes
[619]
but also to achieve better energy
[620]
efficiency lighter weight
[622]
um don't have the requirement to only
[624]
print a couple of feet stop
[625]
let it add rebar let it cure pour it
[627]
instantaneous curing right
[629]
okay um so there's a lot of education
[631]
and i mean people end up more excited
[633]
when they learn about it just because of
[634]
the benefits that we have with uh
[636]
through
[636]
with our material versus concrete yeah
[638]
so what about the
[640]
life cycle lifespan of lsm what happens
[642]
at the end of this can it be crushed
[644]
down to use like for countertops or
[645]
something else yeah so we've done
[646]
accelerated
[647]
aging tests out past 70 years with only
[649]
about 10 degradation which is
[650]
really good compared to traditional
[652]
materials yeah because obviously if you
[653]
didn't touch a wood house for 70 years
[654]
it's going to be a lot it's going to be
[655]
in rough shape but one of the exciting
[658]
things is we've been thinking about end
[659]
of life from the beginning
[660]
so currently we can grind it up we use
[661]
it as filler and new material
[663]
up to about ten percent and the current
[665]
one we use like borax and stuff and the
[666]
new one
[667]
version with the fiberglass we actually
[668]
use glass recycled glass beads
[670]
but that's one of the cool things about
[671]
what we're doing is that it has that
[672]
versatility to play well with others so
[674]
it's not like every single material that
[675]
goes with it has to be proprietary and
[677]
has been new material you can
[678]
because there's so many people out there
[680]
who know the knowledge and the
[682]
experience is really vital
[683]
and they know how to use traditional
[685]
materials so if you slowly implement
[687]
one thing with the traditional material
[688]
they'll embrace it and then slowly learn
[690]
how to use your material too
[692]
so that yeah it's meeting people where
[693]
they're at so it's like you said in the
[694]
beginning you're not displacing all
[696]
those people
[696]
in the industry you're kind of educating
[698]
them and implementing this
[700]
like a new form of construction exactly
[702]
we're trying to what we're doing is
[703]
we're creating another tool
[704]
yeah for them to use and one that we
[706]
hope will help unlock the productivity
[708]
needed to meet
[709]
all the housing goals and at the end of
[710]
the day we're not actually trying to
[711]
replace jobs we're actually just trying
[713]
to address the fact
[713]
we don't have enough people to build
[715]
yeah so we need better ways to build
[716]
that really maximize the value of that
[717]
human touch
[718]
but also technologies that are going to
[719]
attract a new generation of workers into
[721]
the industry
[722]
yes people are going becoming joining
[724]
the gig economy or becoming programmers
[726]
but in past generations would have been
[727]
here hands-on building building the
[729]
future with us like we want them to see
[731]
themselves in construction again and so
[732]
we're really excited about that
[733]
possibility as well
[735]
the company also prides themselves in
[737]
providing turnkey solutions
[739]
they take care of the permitting process
[741]
entitlements
[742]
foundation utilities drainage on-site
[745]
labor
[746]
crane truck delivery etc they are using
[749]
the lessons learned from the modular
[751]
units
[752]
towards larger mighty houses in rancho
[755]
mirage california
[756]
also called coachella valley flexible
[759]
solar panels on the roof
[761]
will apparently not only power the home
[763]
but an outdoor pool too
[765]
a one-bedroom one-bath house will cost
[768]
around 220 thousand dollars
[770]
while a three-bedroom two-bath house
[772]
will cost around four hundred and thirty
[774]
thousand dollars
[775]
they plan to completely eliminate heavy
[777]
gauge steel in this design
[780]
they will rely on ligate steel for
[782]
interior partitions
[783]
and fiber reinforced panels with
[785]
proprietary connections for the exterior
[788]
walls
[788]
another great thing about this company
[790]
is that they aren't marketing these 3d
[792]
printed units as homeless shelters
[794]
they acknowledge the fact that these
[796]
units aren't cheap
[798]
their smallest unit costs 600 per square
[800]
foot
[801]
they are trying to reach the missing
[803]
middle firefighters teachers and people
[805]
who serve the community
[806]
and so that's who we're really targeting
[808]
initially for a couple reasons one
[810]
we didn't want to get pigeonholed as
[811]
just being uh homeless housing
[814]
because if we i mean that was a real
[815]
fear from a brand perspective if we
[817]
start there
[817]
everyone's only going to ever think of
[818]
us that when again our vision is to be
[820]
truly market agnostic and be able to
[822]
serve
[822]
luxury or supportive and everything in
[824]
between so by starting with the missing
[826]
middle we found an area that we can
[828]
really target that there's a real need
[829]
that a lot of people aren't focusing on
[830]
yet
[831]
and also admittedly we're more expensive
[833]
we're not our price point isn't where
[835]
because we're not at scale yet our
[836]
supply chain is
[837]
once our supply chain scales then we're
[839]
gonna be able to bring our costs down to
[840]
where
[841]
we can really do supportive housing but
[842]
the other interesting thing is
[844]
affordable housing is actually more
[845]
expensive to build the market rate
[847]
so i mean i think it's in the san
[849]
francisco i think it's a million dollars
[850]
a unit
[851]
bay area it's like 750 000. across
[853]
california is like 500 000
[855]
for a single unit of affordable housing
[856]
so once we move into multi-story with
[858]
which we're accelerating our development
[860]
our of that ability
[861]
i think that's really going to allow us
[862]
to go into capital a affordable housing
[865]
however when oakland mayor libby schaff
[867]
visited their factory last year
[869]
she pushed a very different narrative so
[872]
this is a
[872]
quantum leap towards really making the
[875]
supply and affordability of housing
[878]
change overnight we love innovation and
[881]
we love
[881]
innovation for social good this is like
[884]
tech and innovation meets housing crisis
[887]
it really bugs me that politicians cling
[889]
on to these trending buzz words
[891]
like 3d printed housing to appease their
[894]
base and give them false hope
[896]
spreading misinformation about fixing
[898]
the supply and affordability of housing
[900]
overnight
[901]
hurts this business because it is so
[903]
much more than that
[905]
to box them into social housing is
[908]
unfair to both the public
[909]
and the company it doesn't seem to
[911]
affect the ability to secure funding
[913]
though
[915]
it was a very interesting factory tour
[917]
because i started off very disappointed
[920]
when i realized that the entire shell
[922]
wasn't 3d printed
[923]
but when i learned about a road map
[925]
decision making
[927]
incremental changes and collaboration
[929]
with city officials
[930]
i appreciated them more i find those
[934]
unsexy realistic truths attractive not
[937]
the sensationalist
[938]
misleading claims in the media a big
[940]
thanks to mighty buildings for arranging
[942]
the tour and providing me with all the
[943]
b-roll footage
[944]
i'll link their website in the
[946]
description below i'll also link my
[947]
patreon page if you can support me i'd
[949]
really appreciate it
[950]
a big thank you to everyone already
[952]
supporting me don't forget to hit the
[953]
like
[954]
button and subscribe to my channel
[955]
thanks for watching see ya
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