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4A. Installing the printer (MK4/S & MK3.9/S)

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4A. Installing the printer (MK4/S & MK3.9/S)

4A. Installing the printer (MK4/S & MK3.9/S)
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Last updated 2 months ago
4A. Installing the printer (MK4/S & MK3.9/S)
 Difficulty
Very easy
 Steps
38
 Available languages
CSPLDEESITFR
Tools necessary for this chapter
Tools necessary for this chapter
Tools necessary for this chapter
Tools necessary for this chapter
For this chapter, please prepare:
2.5mm Allen key
Needle-nose pliers
Phillips screwdriver PH2
Pocket knife or snap-off knife
Assembling the PSU holder
Assembling the PSU holder
Assembling the PSU holder
Assembling the PSU holder
Push three magnets into the PSU-retainer.
Screw two M3x12 screws with two standoffs into the PSU-holder. Do not tighten the screw completely! There must be 2-3 mm space between the screw head and the standoff.
Insert two M3nS nuts into the PSU-handle. Use the 2.5 mm Allen key to completely push the nuts inside.
Assembling the PSU holder
Assembling the PSU holder
Assembling the PSU holder
Push two M3x12 screws through the holes in the PSU holder.
Align the PSU-handle with the screws. Maintain the same orientation of the PSU-handle, like in the picture - see the pockets.
Join the handle with PSU holder by tightening both M3x12 screws.
Assembling the PSU holder
Assembling the PSU holder
Assembling the PSU holder
If you have purchased the Quick release cable add-on, you do not need to install this cover.
Slide one end of the PSU holder cover into the opening in the PSU holder.
Push on the other end into the opening. You should feel slightly "click" to ensure the part fits properly.
Assembling the PSU holder
Assembling the PSU holder
Assembling the PSU holder
Assembling the PSU holder
Prepare the printer with the PSU. Place the PSU on the cloth.
Align the open grooves in the PSU against the screws on the PSU holder.
Slide the PSU on these screws and tighten the screws.
Assembling the PSU holder
Assembling the PSU holder
Assembling the PSU holder
Assembling the PSU holder
On the PSU side, align the hole in the PSU holder with the hole in the PSU.
Secure both parts with the M4x5r screw.
Using the 6/32" screw, attach the PSU-retainer to the corner of the PSU as shown in the picture. Note the correct orientation of the parts.
Guiding the PSU cable bundle
Guiding the PSU cable bundle
Guiding the PSU cable bundle
Guiding the PSU cable bundle
Guide the PSU cable bundle through the opening in the PSU holder.
From the rear side of the PSU holder, push the zip tie through the perforation on the holder.
Tighten the zip tie around the PSU cable bundle.
Carefully put the printer with the PSU aside for now. We will come back to it in a while.
Installing the printer
Installing the printer
Installing the printer
Ensure the PSU-locks are still turned at the same position:
On the bottom frame, turn the PSU-locks to the horizontal position.
On the support, turn the PSU-lock to the vertical position.
Place the PSU on the heatbed protected with the cloth.
Turn it with the PSU-handle facing upwards.
The PSU cable bundle must guide to the left.
Installing the printer
Installing the printer
Installing the printer
To get the printer into the enclosure, insert its left side first.
Be very careful with the LCD.
Avoid scratching the side panels with the printer!
Turn the printer so that the display is on the left side and you have clear access to the space marked in the picture.
It's just a temporary position for the printer. We will adjust the correct position later.
Installing the PSU
Installing the PSU
Installing the PSU
It is more convenient to use the right hand.
Insert the PSU through the hole at the bottom of the back panel. Start by pushing through the part with the PSU-retainer (the part with the magnets).
Installing the PSU
Installing the PSU
Installing the PSU
Tilt the PSU towards the back panel. The PSU must be outside the enclosure and the PSU holder inside the enclosure.
The PSU holder must fit perfectly on all four PSU-locks.
Turn all PSU-lock 90° to lock the PSU assembly.
Adjusting the printer
Adjusting the printer
Adjusting the printer
Adjusting the printer
Rearrange position of the printer like in the picture. Place it in the center of the enclosure and adjust the correct position:
The two rear anti-slip dampers must be locked against the rear plate from the inside.
The two front anti-slip dampers must be locked from the outside by the front plate.
Assembling the filament guide
Assembling the filament guide
Assembling the filament guide
Assembling the filament guide
Insert five M3n nuts into the Filament-guide-a.
Attach the Filament-guide-b on the Filament-guide-a part and join them together by three M3x8 screws. Do not tighten the screws completely, a few turns are enough for now.
Slide the PTFE tube all the way into the hole in the filament guide. From the opposite side, check if the PTFE tube is completely inserted to the end. If not, slide the PTFE a little more. See the direction of the PTFE tube.
Mounting the filament guide
Mounting the filament guide
Mounting the filament guide
Mounting the filament guide
Fully tighten all screws on the filament guide assembly.
Align the holes in the filament guide and holes in the front-right top corner of the frame. See the orientation of the filament guide.
Secure the filament guide to the frame with two M3x12 screws.
Guiding the PTFE tube
Guiding the PTFE tube
Guiding the PTFE tube
Starting from September 2024, you may receive a new black Fitting M5-4. The assembly and functionality remain identical to the blue one.
Guide the PTFE tube to the top frame.
Secure the tube with the zip tie to the frame.
Insert the free end of the PTFE tube to the Fitting QSM-M5 on the extruder. Insert it all the way down.
Assembling the thermometer
Assembling the thermometer
Assembling the thermometer
Assembling the thermometer
Insert two M3n nuts into the Thermometer-bracket.
Insert the temperature sensor in the Thermometer-bracket. Push on it by your thumbs until you feel a slight "click". Avoid pressing on the screen, you can damage it.
From the inside, mount the thermometer to the top left corner. Secure it with two M3x8 screws.
Assembling doors: parts preparation
Assembling doors: parts preparation
Assembling doors: parts preparation
For the following steps, please prepare:
Door panel (2x)
Door-magnet-a (2x)
Door-magnet-b (2x)
Door handle (2x)
Door trim (2x)
The list continues in the next step...
Assembling the door magnets
Assembling the door magnets
Assembling the door magnets
Assembling the door magnets
There is a pocket in each Door-magnet (A and B) part. Place the magnet close to the pocket.
Push the magnet all the way into the pocket.
Insert two M3n nuts into each Door-magnet (A and B) part.
Assembling doors
Assembling doors
Assembling doors
Assembling doors
There are protective foils on both sides of the panel. Peel off both foils.
Place the edge of the door panel on the door trim. Both sides of the panel are symmetrical. It doesn't matter which side you put it on the door trim. It is important that the circular hole is placed on the door trim.
Align the edges of the door panel with both ends of the door trim.
Proceed the same with the second door panel.
In the next step, we will need door-magnet-a and door-magnet-b. These parts are not the same! Both parts are marked with the letter "A" and "B" and have a different shape.
Installing the door magnets
Installing the door magnets
Installing the door magnets
Installing the door magnets
Do not overtighten the screws in the door panel! The panel could crack.
 
Insert the door-magnet-a under the left side of the door trim and the door panel.
Secure it with two M3x8 screws.
Insert the door-magnet-b under the right side of the door trim and the door panel.
Secure it with two M3x8 screws.
Compare the final look of the panel.
Proceed the same with the second door assembly.
Mounting the door handles
Mounting the door handles
Mounting the door handles
Do not overtighten the screws in the door panel! The panel could crack.
 
Insert two M3x12 screws through the holes in the door assembly. In the picture, notice from which side the screws are inserted.
Place the Door-handle under the door assembly and align the holes with the screws.
Join the parts together by tightening the M3x12 screws.
Proceed the same with the second door assembly.
Installing the door
Installing the door
Installing the door
Do not overtighten the screws in the door panel! The panel could crack.
 
Take one of the door assemblies and place it on the open hinges on the right side of the enclosure. Make sure the handle is on the outside of the panel.
Secure the door assembly by tightening two M3x8 screws in each hinge.
Look at the detail for a better illustration of how the door panel is attached to the hinge.
Take the second door assembly and place it on the open hinges on the left side of the enclosure. Make sure the handle is on the outside of the panel.
Secure the door assembly by tightening two M3x8 screws in each hinge.
Installing the top plugs
Installing the top plugs
Installing the top plugs
Installing the top plugs
Insert the Top-plug-edge to the cutout in the front of the top panel.
The top surface of the printed part must be flushed with the top surface of the profile.
Secure it with the nylon rivet.
Install the second Top-plug-edge to the same cutout on the rear side of the top panel. Secure it with the nylon rivet.
Insert the Top-plug-center in the rectangular cutout in the center of the top panel. Secure it with two nylon rivets.
Removing the side arm
Removing the side arm
Take the spool holder that you remove from the printer.
Turn one arm counterclockwise to release it from the spool holder.
Installing spool holder
Installing spool holder
Installing spool holder
Installing spool holder
Completely insert two M3n nuts into the holes in the Spool-holder-r.
From the inside, attach the Spool-holder-r to the corner on the right side of the enclosure. Secure it with two M3x12 screws. See the orientation of the Spool-holder-r.
Insert the side arm into the Spool-holder-r and turn counter-clockwise to lock it.
MK4S Spool installation
MK4S Spool installation
MK4S Spool installation
After assembly, ensure there is sufficient space between the inside wall of the enclosure and the Nextruder when it is in the top-right position. When printing at the full height of the printer, the Nextruder may come into contact with the filament spool. To prevent this, place the spool on the spool holder as far to the right as possible.
Prusament spools are not affected by this when positioned correctly.
Reward yourself!
Reward yourself!
Wasn't it difficult? Of course not. We hope you enjoyed the assembling. Don't forget to reward yourself.
Eat the remaining gummy bears.
That's it!
That's it!
That's it!
Before you start printing with the printer in the enclosure, do the following:
Place the steel sheet on the heatbed. Double-check it is oriented correctly.
On the printer screen navigate to Calibration & Tests -> Calibrate Z and following the instructions on the display.
Well done! You just successfully assembled the Original Prusa Enclosure.
IMPORTANT: Before you start using the enclosure, read the user guide shipped in your package and read the article about how to care of the side panels.
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