The Original Prusa i3 MK3 is the successor of the award-winning Original Prusa i3 MK2 3D printer.

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Total assembly time of the i3 MK3?

Just curious as to the total assembly time that someone who has built the kit experienced. I bought this kit but I just love looking even more into it.

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I took approximately 6 hours plus an additional hour troubleshooting some glitches I'd introduced. This got me from unboxing through pre-flight check. I'm a MK2 owner, so I had some Prusa familiarity.

Tips: USE THE ONLINE INSTRUCTIONS. The printed version is a fine guide, but the online version allows for zooming on the images which can be critical. Additionally, the comments on the steps frequently add essential information.

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Thanks! I just have been curious. Awesome tip as well!


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I'm totally new to 3D printing so never touched any printer before. It took me 8h45m to build it completely. I made 3 little mistakes that took me globally about 45m to correct so it could have taken me around 8 hours of straight work if no error occured.

I took particularly sufficient time to do the electronics chapter as I'm aware that any error in this particular part could make the whole thing irrevocably broken (I'm engineer in electronics).

After that I took Entertainment time in familly to recover. Then could not go and sleep without trying my new toy : I switched on the supply and everything ran smoothly from here on.

It took me about an hour to listen Prusa's first printer start video and do the calibration a few times.

Later I printed the Prusa logo with very few artifacts. Today I printed a pair of parts to make an handle to carry the printer by hand, it took 5h40 and it ran with absolutly no problem.

This printer is a jewel!

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I got the printerkit today and it took me about 5 hours to bring it to print something. But still i am facing some problems because i get a print fan error after the 2nd layer printing, so it will take some more hours to get it done without problems. But this i hope will solve tomorrow.

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I built mine over three days in between other jobs so around 8 to 12 hours, I do know that it took the printer longer to do it's self test than it did for me to wire it up. No problems with any parts and it passed the self test first time. Printed PLA PET ABS Flex so far only problem was Flex which wrapped itself around the extruder.

Changed print settings to 200 and no heated bed now prints fine, but stuck really hard to bed.

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Davis Berger will be eternally grateful.
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