How to improve the quality of your 3D prints on the Original Prusa i3 MK3?

Based on the examination of printers received back from the customers, we compiled a list of the most common problems causing poor print quality. Check them out and improve your 3D prints today!

• Extruder linearity correction calibration:

• Extrusion multiplier calibration:

• For other tips and tutorials go to:

► Read more on our blog:

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[glenanderson]

Top video. Great simple explanations with none of the nonsense. Tightening nuts with needle nose pliers though, criminal act.

[ORHelps]

Loved the video 4 years ago but I would love if you guys could redo it for your new printers as I feel for new users this guide has now become slightly confusing?

[GregAustic]

Just amazing, someone should write a book about you guys and your unique (and critically important!) focus on both openness AND quality. Love my Prusa, works fantastically well.

[brianmoore]

This would be a great inclusion in  new section of the online assembly manual so that when a new purchaser has assembled the machine they can go to this new section and adjust everything properly

[servant]

Suggestion for future printers, make it sense not just the filament presence but the diameter and take that into account when doing the extrusion. I know this is a big one, but if anyone could pull it off is Prusa!

[calvin]

I just finished a 25-hour print in ABS with the MK3. It was a flat part taking up the entire print bed and it had tall, thick walls with 60% infill. I gave it a 30% chance of working, but with the help of a Lack enclosure, it actually came out great. I could kiss you, Mr. Prusa. Oh yes, and thank you for the quality-improving tips. I'll definitely double checks these things. Cheers!

[MarionMakarewicz]

This is so helpful. I was trying to think of a process for regular maintenance and this sure helped me focus on a few issues. I'm getting great prints usually, but some of the tweaks made a difference.

[UncleJessy]

You guys are pumping out some seriously awesome vids! Absolutely love the editing/animations

[MrGoranF]

Checked my MK3 on all points given in the video as well as Extruder Linearity and Extrusion Multiplier calibrations and the results were very good. Many thanks for the video and the links to the calibration pages!!

[IgnoreMyChan]

Woah, you guys actually made this video! Thank you so much!

[mikemike]

The idler spring adjustment procedure seems totally new and will hopefully become better known. Previously this seemed like guesswork at best. One note of caution on tightening the 5 screws in the back of the X-carriage: Overtightening or unevenly tightening the screws can cause the X-carriage to bind and fail to move properly.

[paulab]

This needs to be updated for mk3s. The pictures are wrong. Just unscrewed something I shouldn't have in step 1, and am not strong enough to put it back together. Have spent more time trying to calibrate this printer than assembly took.

[nikonissinen]

Good vid but "keep your filaments dry" and in the background few dozen filaments that haven't been bagged or otherwise protected from humidy.

[KyleEdeFreitas]

Can we get a video like this for the prusa mini? I'm having some trouble with print quality and it would be nice to have a 'definitive' guide for looking at common problems

[Andredeamorim]

When you tighten the back of the x carriage like it's mentioned in the video, make sure you don't over tighten them to much or you can cause the bearings to not run smoothly. This will cause them to create grooves in the rods and mess up the bearings.
Hope this can help someone.

[WildRoseBuilds]

does over tightening the U bolts permanently damage the linear bearings or does loosening them fix the problem? awesome and super informative video as always guys!

[pallepirat]

Such a big help Thank you very much No one knows what makes This but you 😀

[DOOF]

I've been wondering this for so long, I always thought they just had more expensive printers! I will definitely try this.

[belladonnaRoot]

I would also like to add loose belts to this. It happened to my MK2 after something like 600 hours of printing. It shouldn't be a problem with the MK3's setup though.

[eeclarkutube]

Just bought one (kit). Looking forward to some great prints.