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