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This worked GREAT! No more crummy prints. Thanks SO much for the insight.

Thank you for this video, I was having under extrusion problems with my Mini even using Prusament. It has never printed properly since I had to disassemble the hot end to clean out the gummed up junk PETG that I used once. I think this is a much better approach to seating the hot end then described in the manual.

really wished saw this sooner... this is exactly what I did to fix my issue yesterday.

really wish it would have actually shown how to do this

Good tip. I’m trying out a V6 style for the first time and have been having a hell of a time sorting out the clogs.

LETS GOO

Good vid but we need to see the final product!

best printer I have, but now Voron on the way

I spent two straight weeks trying everything in my 3D Printing toolbox. None of it worked. This took me maybe fifteen minutes to do and it finally works. Thank you and oof.

Thanks mate, Solved my problem. I got the same hotend as yours and would get a clog every 5 layers or so

Seriously, for the price paid, this should not be an issue, and it is really BS that anything like this needs to be done to a new printer. With that, thanks for the video, I will see if this is what is causing my issues. I am assuming that what you said "10cm" that you meant 10mm.

Thanks for putting out this video. This was the source of my z-banding and clogs. My prints on my mini look 1000 times better.

Didn't help my printer at all. Prusa is sending me a whole new hotend assembly. Sucks. My mk3 works amazing. This is not so far. Haven't got one print out of it.

that was it, uff, perfect, thanks for this video. the only part that made trouble was the pre-assembled one. probably a monday. now its printing again!

I just did this fix and now my hotend is extruding a ton of excess filament, its like a constant flow of filament, it wont stop until the machine cools down. Is that how the printer is supposed to be? This is my first 3d printer, I'm not really sure how much excess filament should come out after printing.

Just got my mini today, jammed every single time. I have to really thank you, you helped me!

Over a year later and they are still sending them out like this. Pretty bad QC

You are a life saver. I was going crazy, my mini was doing fine with Prusament but other brand PLA was causing clicking and under-extrusion, then straight up frequent jams. Performing your suggested adjustment fixed the issue instantly. Its amazing Prusa sent out these machines with the wrong height on the hotend, did they not test the printer with different PLA brands?

You know :-) Many thanks for the straight forward explanations.

Also fixed my issues with underextrusion and clicking extruder. Thanks!

Thanks for this, fixed my issue. I upgraded to Super PINDA and was getting clicking and odd extrusuion issues, pushig up the hotend fixed it.

New Mini+ owner here, having this issue only a few days in. Hope your solution works and Prusa really should look into this. *sees video date* never mind I think they never did...

Thanks

really improved my mini! thanks!

Thank you for this I got a mini+ and it still had this issue.

fixed my mini following your guide! thanks a lot.

This worked perfectly for mine, been pretty great prints, since. Thanks for putting this together!

This was the fix for me... thanks! Worked a charm and Mini back up to quality prints.

Great video. How does the stock extruder do? Would this be one of the first things to upgrade, or is it decent enough? Also, if the rails are upgraded, would this be a good candidate for going direct drive? Or are this printers spans way to large to do anything other than bowden without a total redesign.

Great video. It has given me a few questions. So the heated bed is powered by the same dc power supply as all the other electronics? Am I missing something? With a bed that size I’m worried the PSU is going to get overloaded. Is there any danger this thing will get overloaded if higher print bed temperatures are used? Do you think an AC bed need to be added for higher bed temperatures?

Do you suggest going the duet route with this printer or to stick with RAMPS?

Thanks for putting together this series. I have been looking at the 445 to supplement the build volume of my MK3 printer. I noticed ZYLTech is no longer selling the full kit for the 445, and it is only suppling the mechanical hardware as a kit. Was something wrong with the original supplied kit?

I have the same issue. I hope it works

Thank you! Totally fixed my issue!

The PTFE issue is still a problem. My Mini jammed and clogged exactly like you described.

My PTFE tube was over a mm too short for what prusa said it should be. They told me my hot end was too low and needed to be moved up too. Told me to use the 1.5mm allen key that was sent with the printer... Except I didn't get one. When I purchased the allen key I discovered all 3 of those screws are stripped! Ugh. So now prusa is sending me a new heat sink and hotend to replace the whole thing.

Having the same problems, and my center grub screw was on so tight from the factory that it rounded off rather than coming free. There's not enough of the screw exposed to grab with another tool. I'm at a loss how to remove it now.

Thank you for sharing! Solved for me

Thanks a lot i was stuck until i found your video ,now my Prusa mini run perfectly

Hey this guy's my teacher!

Hello did that spare kit come with your prusa mini or did you buy that separate? Also have you had any problems with it since this video? I plan on buying one but I want to make sure to have spares of everything. Thank you so much!

really good explanation! just one question I have: if the Mini got one PTFE tube inside and one in the spare part kit. why doesn't it come with the right one from the factory?

God bless! So far, so good! This is very similar to what is in the manual, but enough different that this worked. I did the Prusa way 4 times, still had extrusion\clogging issues. Your way is still working!

Hey dude, awesome video I'm excited to try. How many Millimetres is the gap now between the block and heat sink? Thanks again

Brilliant mate, many thanks for this instructional video. Just received my Mini and was initially impressed with ease of assembly and testing. Test printing however was not good compared with even the oldest of my 3 x MK3Ss. Out of three test prints (Prusa Nut gcode on supplied USB stick) only one was completed and that wasn't pretty. I followed your instructions to the letter. Also removed nozzle and heat break tube. Spot on, just as you'd indicated, way out of adjustment, plastic lodged above the extruder and heat break tube partially blocked. Just added some heat compound when reassembling the heart break tube. All printing perfectly and my faith is now restored in Prusa again. I agree with other below, this should be in the assembly manual as a standard practice for all Mini assembly out of the box. Still puzzles me that Prusa don't assemble their own product correctly in production.........

I am looking to make a hypercube with the z 12, y 10, x 8 rails. I have check the hevo 445 onshape project. I cam find a 10mm dia y carriage clamp, and a Y-Carriage_xDia8LM8UU_1.0, file, but I think I need to find a y-carriage_xDia10LM8UU _1.0 file. Did I miss seeing or or might it be added ?

This video solved the jam issue I was having that is identical to the one you were having, but now I am having excessive stringing. I think I may have raised it too high and now the fan is doing something to the filament. Any suggestions on how high the nozzle should be? Can you measure it?

Good morning and thank you again for another great video. I have printed the endstops from the Prusa file and they look different from the ones in your video. Are the ones you are using specific to the optical sensor and if so do you have a stl file for those? Danny

This is so much appreciated. Thank you for taking the time to do this series.

I kept saying esteps but I meant steps per mm.