hey it's sean from Testim we are back at
Maker Faire Bay Area 2019 and we're here
with our good friend Joseph Russa from
Prusa research now Joseph you guys are
really well-known for a really really
nice filament printer for 3d printing
and that's been your your mainstay for a
long time but today we wanted to talk
about something a little different for
you guys the sl1 which is a very
exciting announcement so it's a resin
printer yeah and what I would like you
talking about is for those of you
watched a lot of tested or are up on the
3d printing typically the the home or
hobbyist or semi-professional resin
printers or SLA or which are typically
laser based but you're doing something a
little different which is really cool so
tell us about that
so this printer is using the MSL a
technology which is mass SLA and
basically you have an LCD panel a new
shine UV LED through it and you must
wear where it is where you want to kill
the rezident right yeah it is very easy
to calibrate you don't have to mess with
the lasers and the accuracy is very good
yeah we are actually doing anti-aliasing
on the display because that is a concern
for a lot of people that you will see
the pixel or you when you when you have
the final print right people people
worried that you will see the voxels
basically right yeah and that's for
those not familiar that with a laser
it's basically drawing out each layer
it's coloring it in so to speak the
advantage of this is it can hit the
whole layer all at once yeah and but the
disadvantage to the masking it that if
you're using lower resolution panels you
can end up actually seeing the pixels of
the screen in the print yeah I mean I
would let the prints speak for itself in
the we're definitely gonna take a look
at these so what most of the the MSL
like printers that I've been seeing are
using generally got like a 1080p like a
HD resolution what resolution screen you
guys use so this is 1440p okay
but you'll actually have like three sub
pixels in each pixel so at this size I
think from top of my head's five-foot
five inch it's more than it out right so
let's what why don't you walk us through
the rest of the process so we have a
build platform very similar other resin
printers and then talk about the your
printer I setup so basically this this
is pretty similar to other printers you
can see like the photons and stuff but
this is more high-end if you want if you
want to print every day it will last
much much longer because this
construction is very solid if you if you
take out the panels everything is
smelled aluminium and it is braack
braack braack so we are using the real
lead screws for the z-axis which that
gives a very nice repeatability and good
with linear rails the specialty in here
is tilting resin tank which helps when
you are peeling peeling the layer right
because they basically you are shining
the light through a thing which is
called fep foil it is a nonstick
see-through membrane and you need to
many are doing the layer at the end you
have to peel it to let a new new new
resident to go under it right
normal printers just try to lift it as a
whole but B tilde tanga way from it yeah
because I can put a lot of strain on the
print and these are all held on these
little makers supports and if you don't
have a mechanism in there it's gonna is
gonna pull it off the supports we're
gonna get shifting in the layers
actually you mentioned that B ventured
into aasaiya printing so but this is not
the first printer technically we made
because we we acquired a company with
five years experience and the team join
our team and we kind of do the first a
twist on it and you know polished
everything for a year and this is this
is the entries got excellent and so we
and it looks like you have like a
full-blown is it a touch screen on the
front for interface and and can you are
you printing from memory on the machine
Wi-Fi USB so basically basically inside
there's a Linux Linux bar we basically
created our own Red Square Park
something like that we are using all
better a 64 be me what if I I'm actually
pretty proud of this and we we want to
use this as a base for other products
but we made everything work everything
working on the latest kernels so I'd say
if usually these Chinese associate stay
don't provide they don't provide the
up-to-date Linux or up-to-date kernels
or you have fermer blobs everything is
without firmer blobs so it is a very
nice very nice future platform because
we have like 60 FPS screen for the UI
and you can run clean Linux on it so I'm
very excited about that
was a huge huge bar it took a huge time
from the development it was a large part
of the development it is this one open
source as well yes yes and we actually
we actually started the beeping in
pre-orders for a couple months but we
started shipping this week right and all
the files are going to be up on the
github quite soon
so Joseph one of the disadvantages of
the resin printing is there is a lot
more post-processing to do so typically
an alcohol bath to wash off excess resin
and then depending on the type of resin
that you're printing with you may have
to do you an additional UV bake yes yes
that is that is so true so two main to
main thing is washing and curing so CW
is curing and washing and it's all in
one so basically you take you take the
print platform and you can attach it
here and you put an eye it's a purple
alcohol here here and you start a
cleaning program and it washes
everything away so we decided to use
standard gastro pens
I think it's a pretty nice hack because
you can buy these on Amazon for few
bucks and you can have forever for every
resident you can have a tank and
everything is nice and sealed so if you
are not using it you can just put it
here and it's the isopropyl smell
doesn't evaporate and here it's
basically using a magnetic stirrer to
agitate the Apple yes yes exactly and
when you when you finish when you finish
pushing you just remove it
oh my god and you this is yes you put it
here close the closed the machine so you
don't get the UV light out right and
there are UV LEDs over and it finishes
the curing that's fantastic it's
basically using the same turntable to
both turn the print and agitate the yes
yes yes and this makes it nice and tidy
and you know by using the same motors
for example for two things we save a lot
of costs for the user so these are both
shipping right now
they started shipping this week and yeah
there's still a lot of pre-orders but
even though we are shipping we decided
to keep preorder price for a little bit
longer so if you if anybody wants to buy
it it's a good time and what's the and
you're doing both a kit version and a
fully built version what's the pricing
on on each unit so the pre-order price
is 1600 bucks for the for the sl1
there's a bundle with CW one for 500
bucks more so thank you so much as if we
are looking forward to getting one of
these to try out for our own
particularly I love the the two-in-one
wash and cure station and the prints
look fantastic we'll get some better
looks at those and I'm sure I'll see you
next year thank you again thank you very
much
