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Prusa Research a.s.

1. P.I.N.D.A. adjustment (part 1)

Step 1 of 9 (Chapter 13 of 14)
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Ensure the printer is turned off and not plugged in.
While moving with the extruder, the X-axis motor works as a generator. You will create a small amount of electricity and the LCD might flicker. Move with the extruder reasonably slowly and in the future always use the printer's controls.
⬢Move the extruder manually all the way to the left.
⬢By rotating BOTH threaded rods at the same time on the Z-axis move the nozzle until you reach the heatbed. Try rotating both the rods equally!
Check again from a different angle the nozzle is touching slightly the heatbed. Don't bend the heatbed!
Don't place the steel sheet on the heatbed during the entire P.I.N.D.A. probe adjustment process. Wait for the XYZ calibration.
P.I.N.D.A. adjustment (part 1)

Contents

Original Prusa i3 MK3 kit assembly

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Todd Podbielski
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Was there a step that I missed that involved lubrication?
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Filip M - Official Prusa CS
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Hey Todd,

No, you’re good to go. You can schedule a maintenance after some time to lubricate everything, but it’s not necessary now.
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Dennis D Day
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I am now finding out that the print head is coming out to the far left side in front of the Heatplate(in the cutout angle portion of the board.)
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Dennis D Day
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I just received my '''i3 MK3''' two days ago and just finished building it. Now that I am trying to complete the setup wizard it fails every time it gets to the Z calibration even after I have played (adjusted the PINDA adjustment). It fails as it gets to the bottom (sometimes the nozzle touches the plate other times it does not) I have used the procedure of the wire tie to adjust the PINDA moving up or down is not making any differences. Please help.
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john@freesuns.com
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Hi Denis

Check your black plastic Z screw rod thread nuts (x2) are installed correctly, if installed upside down they collide with the top of the z axis support.
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Filip M - Official Prusa CS
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Hello Dennis,

It sounds like a faulty PINDA probe. Please contact our support via email (info@prusa3d.com) or Livechat (http://shop.prusa3d.com/).

Official Prusa Support
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Ybl84f1
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Something to be aware of, at least with the double spool filament holder. NOTE that my print head was at the highest point unlike the picture. If the print head is at the top and if your filament sensor wires from the print head are not COMPLETELY recessed in the cutout channel before they enter the textile wrap they may snag on the lip of the filament holder. The clearance is only 1-2mm, so any slack in the wires sticking out and they will snag. (Also the loop with the sensor wire they asked us to make could snag if it sticks out at all).

Someone who has lowered their print head before this step may not even notice this. Which leads to the bigger question is, is the head ever this high when printing or is this past the Z limit for printing? If it does get this high and someone has these wires outside the channel they could snag and tear off during a print. Would be good for PRUSA to weigh in and make a note back at that step if needed.
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Filip M - Official Prusa CS
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Hey Ybl,

It’s mentioned in the assembly guide that wires have to be properly hidden. Even when they have some slack, the possibility of breaking the spool holder is low.

Official Prusa Support
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Tom Heinz
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Help! My z-axis calibration does not fail but when I print first layer the nozzle doesn’t lower itself to the print bed. It’s 1 or 2 mm above and the filiment ‘falls’ from the nozzle. Live-z does not seem to lower the nozzle until the number is -1.878, supposedly well beyond the -1 mm mentioned in the manual. Also, my Filament detect fails. I may have damaged the PCB because my wiring is good. It was in it’s slot but loose, wobbly and I thought maybe the sensor is not lined up with the hole. I tightened the screw until tight but then I could see the bottom of the screw head. I figured it would print without filament detect so I continued. Is that true? How do I order another PCB? Tom Heinz
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Jakub Dolezal
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Hi Tom, try lowering the PINDA probe first (just slightly). If it doesn't solve your problem with the calibration, then please contact our support at info@prusa3d.com . Filament sensor has to be tightened properly, see the assembly guide, chapter 5. If the issues persist, please contact our support as well.
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