Watch Me Build: Prusa MK4 3D Printer (Assembled)

HUGE thanks to Josef Prusa for sending this printer to the studio. I originally hoped to use it on my Open Sauce project (watch here: https://www.youtube.com/watch?v=n5d0hzgA9BI), but it didn't arrive in time. There was an issue with the first prints, but thanks to some quick help via Twitter, we got it sorted! Prusa just announced they're manufacturing MK4 printers in the US, so hopefully that helps cut down on shipping-related issues like I had! See their blog post on USA manufacturing: https://blog.prusa3d.com/we-are-now-manufacturing-3d-printers-and-filaments-in-the-usa_99148/ And check out their site for more on the MK4 and all their Prusament filaments: https://www.prusa3d.com They currently have a special deal on MK4 kits—free shipping and an extra warranty, plus a $100 voucher for future purchases. I don't get any referral revenue, just wanted to pass along a good deal when I see one :) Support me on Patreon: https://www.patreon.com/geerlingguy Sponsor me on GitHub: https://github.com/sponsors/geerlingguy Merch: https://www.redshirtjeff.com Main Channel: https://www.youtube.com/@JeffGeerling 2nd Channel: https://www.youtube.com/@GeerlingEngineering Contents: 00:00 - The MK4 Kit 02:21 - Printer Setup 06:10 - Calibration 10:08 - Happy printing! 12:22 - First Benchy 13:30 - Layer Problems 14:39 - Y-axis belt tension adjustment 16:27 - Firmware upgrade 17:03 - Second Benchy 18:06 - Positron and the 3D Printer Wall 18:35 - Third Benchy (problem solving!)