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hi I'm Tynan and I'm here to talk about the prusa mark IV I have definitely been

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a fan of prusa in the past a lot of their printers and a lot of the experiences I've had with them have been

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generally quite positive and the fact that they're in almost entirely open

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source and allow users to hack it and

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upgrade it along the way is a big selling point that I generally have been

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quite a fan of as time has progressed there have been a

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couple other printer manufacturers in the market that have made things more

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difficult it looks like they sent us a couple of snacks

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in terms of other unboxing things a nice little handbook for anyone who needs a

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little bit more introduction power cable standard stuff but a whole bunch of

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replacement Beds which is quite nice because this is one of the most common

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consumables especially if you accidentally cut into it or something

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like that when you're trying to take a part off and a bunch of packing

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they do provide a box of filament which

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is always nice assorted accessories which we'll open up after this big box

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is out of here one piece yeah

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all right there be the printer one more

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little box to open up I have a suspicion yeah so this is a

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nozzle adapter which normally doesn't come with it this particular one has two

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sides so you can load multiple filaments at once if you want this is the pla

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prusa Galaxy black which is persiment they should have a profile for it when

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we get there so I haven't actually seen an improvement roll in a while but they

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have a little filament catch on the end inside of the Roll normally I see it

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like fed through holes or something like that they have a wi-fi system built in

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which is a notable Improvement in previous versions you've had to either

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attach a Raspberry Pi or some other single board computer or Wi-Fi adapter

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to be able to connect these wirelessly but that seems to be out of the box

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compatible now Yee there's two big upgrades that I'm aware of right now one

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of them is the extruder set itself they've replaced the existing two gear

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drive with one large gear and a couple of idlers that greatly increases the

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amount of grip that the extruder has on the filament and to compensate for that

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they have a planetary gear set that allows the stepper to operate well

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within its ideal range but still have the filament move at a reasonable Pace

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they have a force sensor integrated into the hot end so they can probe the bed

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and get the actual measurements rather than having to do manual bed leveling

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which is also a massive quality of life Improvement is anyone who's ever had to

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mess around with that knows it's an adventure in a lot of the upgrade

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kits you can get the printed Parts purchased as well but generally for any

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of these they suggest just printing your own upgrade Parts they'll provide you

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with the files and get you rolling to the point and also even on production

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printers they print a whole bunch of components including the screen cover a

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bunch of the other stepper mounts

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and some of the mounting components onto any of the hardware boxes and that is

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all of the hardware setup that we have to do before you get set up and start

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doing software but that'll come right after the segue to our sponsor thanks to

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the build volume of this printer is 250 by 210 by 220 millimeters it's not the

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biggest build volume out there but it'll get most of what you need done

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and the self-test begins we will need your help with this test you'll be asked

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to tap the nozzle don't worry it's going to be cold and it gives me a nice little

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countdown and that's just detecting that the load

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cell is working properly now it's doing a z-axis calibration goes all the way to

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the top until it vibrates and then moves over to the side this is its initial

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self-test after it's built or taken out of the box to make sure that everything

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is attached properly and that it's detecting its ends this particular

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printer doesn't actually have limit switches on most of the axes I think any

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of the axes it detects feedback from the motors themselves they've been upgraded

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to avoid weird artifacting along z-axis

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okay so it's still going through tests and now it's actually starting to heat

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things up so no one's particular surprise prusa uses prusa slicer it's a

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great slicer and a lot of other companies actually make forks from prusa

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slicer to develop their own because they do a very good job it has all of your

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standard settings all the way down to 0.05 millimeter detail to 0.3 draft

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standard you can upload a whole bunch of different generic or persimmon specific

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or other manufacturer specific filaments into your presets and they also allow

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different profiles for your printers and different nozzle sizes we have a nice

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little Snorlax here that we're going to do our for our print while this is

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heating up there's a couple of things to talk about about the nozzle itself there

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is a quick swap nozzle with a couple of thumb screws inside the extruder so you

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can take it out and swap a new one in very very quickly compared to any others

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and also the nozzle and extruder section is fully metal with no PTFE pipe or PTFE

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tube which means the entire hot end can get up to 300 degrees Celsius which

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allows you to work with a lot more of the engineering style Plastics on this

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particular printer all right and now here is our full self-test result

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which looks like as one would hope everything passes happy printing thank

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you this is another nice improvement over the previous versions where you

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could only use SD cards to upload files you can now use USB drives and you can

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also hook up a micro USB to I believe

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their your laptop if you wanted to print directly from there

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it should detect it automatically

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lovely oh it does happen automatically that's quite nice

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slight caveat for this make sure that the setting of the

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plastic is correct for your nozzle temp or you're going to have a bad time so

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it'll pull it in automatically and then ask you hey what plastic did you just

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put in and then this is gonna these are going to be all of your presets for your

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different types of plastic so pla pet G ASA polycarb now that that's all set up

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we'll hit print and it's going to go if I recall

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correctly this does have its own first layer cowl built in where it'll probe

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the area that it's going to print in to get a good mesh map in case there's

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deviations down or up so it'll automatically compensate for that

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variation as it's printing its first layers it's good fun so this is a 45 minute one

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at this point it's going to be heating up the hot end

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and the bed and then once that gets to

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temperature it'll go now it's going to go through and do its

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self-test or first layer calibration it just triggered the load cell and I

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actually noticed that there was a little dot on the print bed right where it

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touches that's it detecting through the load

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cell where it is and now if I understand correctly it's

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going to go through and do a grid in the area that it's printing and one nice

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thing about this is it only does the area where it's actually printing so it

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doesn't always do the entire bed which can be a pretty substantial Time Savings

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one of the things that it did here was it reduced the hot end temperature to

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the point where the plastic would still be solid but malleable which means you

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don't get those little dots left on the print bed as you're probing it

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and now it's increasing the temperature up again to actually start the print and

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the way it goes some of the other things I've seen floating around with the four

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cell and this setup in general some people have suspected that they may

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release active Force compensation from the plastic coming out of the nozzle to

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detect if there's any variations additionally though never buy something

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for a feature that might come I am pretty inclined to believe that any of

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the features that could be implemented with this Hardware but isn't yet most

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likely will over time or someone on the

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internet might just figure it out and post it to everyone and if you wanted to use it you can though be aware of using

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other people's code without vetting it first that is an extremely flat first

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layer a lot of the times when you're doing your first layer if you over

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extrude or under extrude while you're going over it you'll end up getting

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little bumps that come up or little gaps in between the in between the layer

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lines but on this one I don't see any of that at all

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even from the outer profile into the intersection which is

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solid all right and away it goes

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we'll see you in about an hour

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this print looks real pretty

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yeah I don't have very many

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yeah the bottom layer is very flat the print quality of this is very very

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consistent and similar to what they say I don't see any banding or recoiling

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when it's going around corners it seems to be extremely consistent on all of the

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flat faces which is really nice now that we have a successful print on this thing

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let's start taking apart and showing some of the cool upgrades that they've done using my nice lttstore.com

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screwdriver that is interesting those are not magnetic screws

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so this is that planetary gear setup that I had talked about earlier you can

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see in the center of that is the post

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attached to the motor you have two Planet gears on the sides and then an

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outer ring this holds stable and it

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moves the actual extruder gear which is in the side so these are the two thumb

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screws that detach the extruder open things up on the floor oh hi there this

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is the other two idlers for the extruder

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and then on the inside you can see the large extruder gear that engages with

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the plastic in general I'm quite happy with this printer and the history I have

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with prusa and the printers I've used from them and that I've seen people

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using from them I do believe that it is a very good machine though some of the

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features of it don't quite seem to be fully implemented yet like the extruder

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having force feedback or I have learned this is a touch screen

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or at least the hardware is a touch screen it's not implemented as one but

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maybe at some point and I think there are other a couple of other aspects of

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the printer itself that will get better over time with more firmware and

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software updates it is a good printer and I'm really happy with the overall

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quality of the parts that come out in the overall space of 3D printers

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currently I really like what prusa does I like all of the machines they've

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launched but with some of the competitors like the bamboo that have

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come out it's made the value proposition a bit more interesting this is a machine

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that you can buy not have to connect to a network not have to connect through

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anything hook up through your own Wi-Fi or your own Ethernet if you want to and

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not have to worry about it connecting to any other servers so there's definitely

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some value there but for the price of

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about eleven hundred dollars for the out of box kit it is expensive looking at

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the biggest competition in the price bracket the X1 Carbon from bamboo or the

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p1p they are at 1200 for the carbon or

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700 for the p1p compared to this which

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is 1100 for the as built out of the box

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or 800 for the kit that you have to assemble probably per myself purchase

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the kit and then build it because I'm technically Savvy and have built several

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3D printers before but if you just want something to take out of the box and be

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good to go I would say that this would be a good purchase especially in the

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long run if you have a Mark III already or a Mark III Plus getting the upgrade

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kit is a pretty strong proposition at 580 for the upgrade kit plus a couple of

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3D printed Parts you'd need to do yourself that makes a ton of sense to take a printer that's been around for

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five years already and giving it a new lease on life with a new extruder a new

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a whole bunch of new electronics and a bunch of other upgraded components

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overall it is a great printer and I

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believe that it does have some benefits over some of the competition in its

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history as well as the dimensional

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accuracy of the printer I know we've had a couple of gripes internally about how

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much tuning is required for dimensional accuracy on the bamboo and historically

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everything I've ever had from prusa that's never been a problem I maybe have

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to do one iteration figure out accurate settings and job done thank you so much

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for watching this episode of ShortCircuit do you have a 3D printer at home

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and think that this is either an upgrade path or a replacement for what you have

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leave your comments down below and be sure to like And subscribe