Original Prusa i3 MK3 guide for a new user 

Update: Do not use acetone on powder coated sheets! (10:16 is just for the smooth PEI sheet)

Nice job Prusa! I like how you showed the proper first layer using real pictures, which will be immensely helpful!

Hi Josef, this Video marks the end of an excellent Documentation! I finished the Build of the Mk3s 2hs ago. No problems, everything worked from the beginning. Thanks a lot!

Hi Jo! I just received my MK3 last week and I want to thank you for making such an amazing product. The Printer works absolutely perfect from the first print and I already ran it overnight without any problems.

I love that this is available as a kit or pre-build at different/affordable price points. REALLY AWESOME. open source; great for developers. OUTSTANDING!

Thank you! Just completed building my new i3 mk3 worked, first time! printed Prusa logo looks good, now printing whistle. I can't wait for the MMU 2.0! Will be printing conductive and flexible for various projects. Another satisfied customer

This video saved my ***. I got the fully assembled version and thought I needed to do calibration but it erases the already configured calibration. I really didn't know what to look for in the first layer and giving me the reference point of "about 1mm" was exactly what I needed to know to start. Thank you!!!

Finished assembling my MK3 a week ago, apart from fiddling with Z-level to get proper bed adhesion, it has been working perfectly! cheers

Just test printed the first object. Thank you for the instructions. It was a joy to assemble the printer myself, over the weekend.

There's something very gratifying in seeing people focus on innovation and quality. Not following everyone else and doing things their own way often finding far better ways.

Finished the build of my prusa a few minutes ago and am already printing! Great machine!!!

I will never the money for this printer but seeing it being set up and printing brings joy to me !! Nice one Josef.

I'm looking into 3D printers for a moment now. After a lot of research I got so hyped for a MK3s! Can't wait to get my wife around so I can actually buy one.

I couldn't figure out why my prints were so wonky after calibration, this video showing the -1.1mm really rung the bells and I just finished the badge without errors. Thank you!

This video did not helped me in setting up my printer, assembly guide and user manual was enough. What this video did was accompanying me for 25 minute calibration process so I did not felt alone. Thanks Josef :)

Just bought my first printer. Very excited. Love the quality instructional video! Very much appreciated 🙏

I just placed an order for the Prusa i3 MK3s. This makes me happy that, after 3 weeks of watching videos, I decided to buy the Prusa

The live Z calibration is an awesome feature! Very impressive machine.

Josef, great video!! These videos will help a 3D printing novice such as myself get up and running quickly with the Prusa MK3. Thanks again!!

Great video! I always follow your instructions and rarely have any problems with my mk2s. I look forward to the same experiences with my soon to arrive Mk3 upgrade kit.

This video will really help me setup my printer up ! Happy New Years

The "Adjusting Z" calibration to dial in the initial layer until it is "Nice and squished" *as it prints* is incredible. Great idea.

Just bought your MK3 Printer for my son for Christmas, really looking forward to get into 3D printing! 👌🏻

Dude shout out Joe for putting up a video so I don’t have to read the handbook and can just follow along after assembly. Dudes a real G

Nice video Josef. @9:38 is a good photo for how the first layer calibration should look.

Just got my assembled MK3 today, first print was perfect. Thanks for everything!

I have only been printing for about 7 months now. I've been bitten by the bug. I have 4 printers already and this is definitely gonna be my fifth. I hear a lot of good things about your printers. I cant wait to get mine. 🤗

Just ordered my MK3S yesterday. Super excited to start printing.

First print is running. Took me like 10 hours to build the printer.Great quality! What I needed, just fire and forget until it‘s done! :-)

Thanks Josef and team! Still waiting for mine to ship, but this will be incredibly helpful come February! :) Also, I just purchased that intro music track for a client based video I’m editing and I’ve heard nothing but that audio track for two days, so I laughed pretty hard when the first thing I hear after getting back from the office is that same darn track. 😂😂😂

can't wait for mine to arrive in on thursday. At the uni lab i have dmls sls sla and fdm by stratasys, haas and such major brands to play with, but this is my first very own 3d printer and i am excited like a child:) It took me 3 weeks to decide. I really can't wait even paid eur20 more to have guaranteed 2 day delivery:) I know the result will be far from what i've experienced with the big machines, but now i can wake up at 2am with some idea , draft it and have it ready in the morning. The choice was between Zortrax 3 and the Prusa mk3s and Prusa won by the waaay lower price , the great community built around it and the great vibe it has. And now it is miiiine!

I moded some Prusa i3 MK3S and printed also PEEK. They work great. I also built an professional enclosure. There are great working machines with enough space for improvements.

I just finish building it!!! A Piece of art! ... will spend more time building things instead of adjusting/fixing the freaking printer.... Thank you Prusa Team!

I finished building my mk3 in prox. 6 h and calibration / 1. layer hight in prox. 30 min. I have printed some things from SD. Everthing works perfekt from the beginning on. Thanks Prusa Team !!!!

I am sooo excited!! (Typing this with one hand while holding a white sheet of paper as the printer is calibrating the 4 corners :) )

I received my Prusa yesterday, I have not unpacked it yet. Will do so next week, I am truly excited

Loved the MK2 so much I had to get the MK3! Great support, great printer, I wish I could manage everything as good as you! Did it right! BTW - just got my MK3 up and running, prints awesome! Awaiting an MK4...

Wow, you have spent a long time programming that wizard to be so easy to use.

I just ordered yesterday the Mk3 I'm so excited to get it. I'm coming from the Anet A8. So, a big improvement 😂

Great video Josef, Crystal Clear Instructions ! Happy Printing.........

Just bought Prusa Mk3 thank you for your video the setup was super easy

Hello Josef. Thank you for the really great product! And your presentation! I am excited for laying my hands on this machine. First few prints work as designed!! Vladimir.

Thanks for the video, looking forward to my new printer in Feb :)

I still can’t believe how nice or a release that print bed is. Definitely better than exploding glass.

Hi, I am Hong Maker. I am glad that the Korean subtitles I made are reflected in this video.

Great idea to make such a series of Videos , cant wait my MK3 arrives.

Glad to be a proud owner of a Prusa Mk3s since today!😁

Bye bye K8200, hello i3.. keen to start putting ours to use!

Josef thanks i finally got a working 3d printer and man its quiet!! Assembled in a afternoon printing in the evening. NO more Chinese crap only prusa original from now on!!! Thanks a lot!!!!

Hi Josef, Thanks for the information videos, I'm waiting for the delivery of mine

Excellent and informative video, thanks a lot. Can’t wait to receive my printer.

I am having issues with Calibration. Built it ourselves, and I keep getting an X Axis error when it goes all the way left. It stops, then gives me the error. Tried a few things and not sure what’s going on.

Thanks for this, just built my mks3s and was having adhesion issues, and thankfully the vid showed nozzle was still too high! 👍😁

Outstanding guide ! No wonder why Prusa is the best !

There printers are top quality, simple and easy to use. but that's not why they are the best in my opinion. There easy to understand software and guides are what makes them great! And who cant love this guy :,D I love my mk2 and I am so getting the mk3 :D

Couldn't it be doing the heater tests at the same time as some of the other tests to save time?

Nice promo vid there Josef. I've heard a lot about the Prusa but never seen one. Looks like a good printer.

Got a mk3 coming mid February!!!! Can wait!!! 😆😆

Ordered a MK3 last month and waiting for my April 9th shipping notice. Unfortunately i keep watching all the videos and looking at STL files i want to print which is making the wait excruciating... I can't wait to get mine!

I just bought my first Prusa last week and already i cant wait for it to get here... 3-4 weeks to go...

Just ordered mt first prusa i3 mk3 lei, but why no led light on top?

Hi Josef, is there a guideline for preparing a 3D modelling for 3D printing, specifically the MK3 i3?

Very nice! ... i have to wait till february getting my i3 MK3 hard time to wait

Costs more but worth every cent. Brilliant company.

Superb quality video Joe, just like your printers.

I have a Prusa i3, love it. Actually considering a second for the sake of speed

Thank you so much for that video Josef!

Man I want one of these! Good job Joe!

I just bought this so I can build a Tesla turbopump which means I'm going to test if my concept* works AND I get to use my awesome new Prusa i3 MK 3 to replace my broken dishwasher nozzle at the same time! Huzzah! Thanks so much Josef and the rest at Prusa 3D! You're a good eggs and I hope history has a page for your folks cuz you deserve it! *Tesla turbo-pump will have a vacuum compressor intake before and after a Tesla turbine to suck the heat out of the water and hot air inside the dish washer resulting in faster drying/cooling without having to expend any extra energy besides what's already used to wash the dishes. I mean I wanted to start with a (what might be a self-powering) turbofan instead but the wife told me it was either I fix the dishwasher or I'm on exclusive hand-washing dish duty for the house until I get that nozzle fixed so it's that while doing turbofan or put the tasks together.

I adjusted the Z height (First Layer Calibration) using the non-textured sheet and the PLA Prusament you included with the Prusa Printer. Ended up with a value of "-1.100", which I saved as one of the 8 presets. The prints are turning out very nicely. Do I have to change this Z height of "-1.100" if I try using a non-Prusa PLA filament or a different type of filament (PETG, etc.)?

Diferent bed temperatures have to adjust z offset for each one? exemple, 1 measure at 110 degreen, and another at 80 degre,

Nice checking procedure! Here still extruding plastic with older i3.

Thank you for the video. I am considering your "Original Prusa i3 MK3S kit" as my very first 3D printer. You mention in the video to use isopropyl alcohol of at least 90% concentration to clean the bed. Most of the isopropyl alcohol we find in the US is only 70% concentration. However, denatured alcohol (almost pure ethyl alcohol, ethanol) is readily available at hardware stores. Can I use denatured alcohol instead of isopropyl alcohol to clean the bed?

Just received the full unit. Do I remove the' Prusa' logo that comes attached to the base plate (and how)?

I have still a i3 mk3s with a error mintemp. After replacing the extruder cable and the extruder thermistor and also the heatbed cable. Which I thought to be the problem. But the error is still there. I even did a factory reset but that did work either. Could you please help me out with my problem. I'm lost now and don't know what to do now.

hi, if I want to modify the orginal Prusa i3 mk3 printer and change my heated bed for a bigger size bed or extend z axis , does the printer recognise the extension in the axis and would auto bed leveling works

Every company should do this kind of videos.

Hi is this 3d printer automatically compensates the shrinkage based on the filament material just to maintain the actual dimensions on the CAD file.

Thank you very much for what you do - the manual was extremely well done and I built my Mk3 kit which came out perfectly (according to the self test everything was perfect) and I printed the logo just like on this video. The only problem I have is, what do I do with all the extra screws that you supplied with the kit! :-) Thanks Joe!

Josey, any chance you can make the new steel surface for other printer build size? I've love one to my Ultimaker 3.

Hi, I'm hoping to you clarify what you mean by "catches on the paper"? 3 of the calibration points the nozzles touches but does not drag the paper, the 4th it drags the paper a little, is that what you mean by catching ? The nozzle does not seem to be contacting the heat bed in that spot.

Thanks for this Josef, very interesting to know how to set up correctly. I was given a Prusa i3 (I think it may be one of the very first models. I’ve been replacing parts which were broken etc and it seems to be okay, except for an issue with the software. It is a 200mm cube print area, and I wanted to know how do I get the software to reinstall on the machine. I think it’s got a glitch in it. Any and all assistance is appreciated 😊

Hey Josef i have a question :D i have this sunhokey prusa i3 printer and want to upgrade to the MK3 is this posibble with your parts ??

Thank you Josef I wish other Companies follow your lead

You said that when you were doing the setup for the printer that if the z-axis is not in line with each other that they will go all the way up to make it so that they will be in line again. But the printer I have only went up a little bit and did not make them back inline again and the z-axis also kept pushing down on the heating bed when it was testing the z-axis and I did not think that that was right. Is there a way to make it so that it does not do that anymore.

when printing really tiny but precise parts like little furs on the owls my printer shakes. is this normal? I have a filament holder on the side and it shakes a lot! my prints come out fine! it just shakes a ton whent he head is rapidly moving left and right!

Great product...cannot wait to either buy one or build one

What should I order from the shop to have several metal plates to swap between when printing same object many times for a print farm. To reduce time between prepping each print I want to take off the plate and place another while removing and cleaning the first plate

Just finished up with a new MK3s build. Apparently the protruding screws are no longer being used? (5:06 in the video)The spring plates now just rest on the bed and are bit off-center. This is now the norm according to support. Dunno, seems a bit Creality like to me.

i downloaded the xcalibare thingy and i got some parts not working great ut its not easy to adjust i recently unscrew 1-2 swings on left middle and middle in hope it works but its mainly the filament that goes around the structure that leaves the grid i dont get it.. the prints it self are great!. i run in one issue but it solved itself by printing over it my Z live = 1050 as in videos said but i cant get it completly flat everywere .. if i do to many on 1 sheet like 8 pieces small then i get those not sticky parts @ 1 side

Does the nozzle need to be cleaned the first time it's calibrated?

where can i buy it this sheet. i bougth a mk3 but comes with the steel sheet ...

Hello, Josef. Do you remember old plotters with a "revolver" of pens? Would it be possible to create a 3d printer with a "revolver" of nozzles?

How high would you say the PINDA probe has to be from the surface of the plate, with the steel heat bed

My extruder doesn't have the "chimeny" where the filament is inserted into...I dont even see it in the assembly manual. I have the MK3S...maybe they are different?

Hi, I have a Tronxy i3 printer which I understand is derived from your Prusa. I need help. I went to replace the broken X axis Limit Switch over a year ago, removed the original one that I had installed when I built the printer myself, but did not get around to installing the new one that I had waiting. It is a year later and I am now trying to install the new Limit Switch which is exactly the same, but the wires keep pushing into the Z axis steel bar. No matter how I try I can't keep the wires from jamming into the bar or behind it. the sleeves around the wires at the junction are very stiff and I am concerned about breaking them if I bend them too much. What am I doing wrong?? Please help as I am so baffled by it.

I’m having a self test error y axis length, it will move the bed all the way forward no problem, then all the way back and then the belt starts to skip and grind... seems like the sensor expects the Y axis to be longer?.... but if I run XYZ calibration alone, no problems... I have about 2 hours of experience in this field lol. But my first thought was weak tension.... but now idk. I’m currently printing the Triceratops Skull... no major issues that I can see(but I also don’t know exactly what I should be looking for either).

The Benchy that comes on the sd card, is the slicer parameters documentet somewhere?, It's printing with an amazing quality, and I see that it also uses z-axis retraction, which I haven't seen on my old printer, so I wonder, how are these parameters, so I can use these as an starting point?, or is it one of the standard profiles in Slic3r?

4:53 here my print head doesn’t move up but still says to put the steel sheet in. When I do that and press to continue, it crashes the nozzle and I have to reset it. Using Prusa MK3S+ with firmware 3.15

After five years this machine comes with the same screen panel. Wow!