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Table of Contents
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Step 8 - Pro tip: inserting the nuts
Step 2 - Adapter-mmu2-assembly
Step 19 - E-axis is finished!
Step 3 - Idler bearings assembly (part 1)
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Related Manuals for Prusa Research MMU2S
Summary of Contents for Prusa Research MMU2S
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Page 1: Table Of Contents
Table of Contents 1. Introduction ....................................Step 1 - Preparing the MMU2S upgrade kit ............... Step 2 - All the required tools are included ................. Step 3 - Use labels for reference ................. Step 4 - View high resolution images ................ - Page 2 Step 4 - Pulley-body assembly (part 2) ..............Step 5 - Pulley motor parts preparation ............Step 6 - MMU1 to MMU2S upgrade (part 1) ............Step 7 - MMU1 to MMU2S upgrade (part 2) ............Step 8 - MMU1 to MMU2S upgrade (part 3) ..............
- Page 3 Step 18 - PTFE tube parts preparation ................... Step 19 - PTFE tube assembly ............. Step 20 - Assembling the MMU2S unit (part 1) ............. Step 21 - Assembling the MMU2S unit (part 2) ............ Step 22 - Assembling the MMU2S unit (part 3) ...........
- Page 4 Step 7 - Download the new firmware ..........Step 8 - Updating both firmwares using PrusaSlicer ........... Step 9 - Adding MMU2S settings to the PrusaSlicer ..............Step 10 - IR filament sensor calibration ..............Step 11 - IR filament sensor calibration 2 ..............
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Page 5: Introduction
1. Introduction Original Prusa i3 to MMU2S upgrade... -
Page 6: Step 1 Preparing The Mmu2S Upgrade Kit
MK2.5S+) Original Prusa i3 MK2/S MMU1 (upgrade is no longer available) For those upgrading MMU2 to MMU2S, please follow chapters 2 and 3 to rebuild the extruder, then skip to chapter 6 (Step 23), assemble buffer in... -
Page 7: Step 3 Use Labels For Reference
When you browse the guide on help.prusa3d.com, you can view the original images in high resolution for clarity. Just hover your cursor over the image and click the Magnifier button ("View original") in the top left corner. Original Prusa i3 to MMU2S upgrade... -
Page 8: Step 5 Printed Parts - Versioning
Printed parts - STL files All parts necessary to finish this upgrade are included in the kit. Only exception is that if you are upgrading MMU2 to MMU2S and decided to print the parts on your own. In case some parts get broken during the assembly, you can reprint them. Please check all plastic parts before starting your build to make sure there are no issues. -
Page 9: Step 7 We Are Here For You
Every time we recommend to use the "screw pulling technique", you will be reminded with Joe's avatar ;) Parts in the pictures are used as an example. Original Prusa i3 to MMU2S upgrade... -
Page 10: Step 9 Treat Yourself
Eating more or less bears than prescribed in the manual might lead to fatigue or nausea. Please consult a professional in the closest candy store. Hide the Haribo for now! From our experience an unattended bag with sweets tends to suddenly disappear. We are currently investigating this phenomenon. Original Prusa i3 to MMU2S upgrade... -
Page 11: Step 10 How To Successfully Finish The Assembly
Eat the gummy bears as instructed! Disobedience won't be tolerated :D Most important: Enjoy the build, have fun. Cooperate with your kids, friends or partners. However, we take no responsibility for possible fights ;) Original Prusa i3 to MMU2S upgrade... -
Page 12: Step 11 - Select The Correct Printer Type
You have to use new printed parts. Please follow MK3/MK2.5 extruder disassembly If you start with the old MK3/MK2.5 printer, then follow the chapters with this type of the printer (chapters “C”) Original Prusa i3 to MMU2S upgrade... -
Page 13: Mk3S/Mk2.5S Extruder Disassembly
2. MK3S/MK2.5S extruder disassembly Original Prusa i3 to MMU2S upgrade... -
Page 14: Step 1 Preparing The Printer
STEP 2 Releasing the cable bundle MK3S and MK3S MMU2S extruders are very similar, we need just to change few parts, but we have to release the cable bundle. We need to gently pull the IR filament sensor cable back to the extruder as the sensor will be in a different position. -
Page 15: Step 3 Unplugging The Ir Filament Sensor Cable
While releasing other screws in the next steps, make sure to check each screw is still holding all the parts. If you release the screws above certain level, the entire body will fall apart. Original Prusa i3 to MMU2S upgrade... -
Page 16: Step 5 Fs-Cover And Hotend Fan Disassembly
Find a M3x10 hidden behind the fan and release it slightly, few turns are enough. Our goal is to keep the parts connected. Repeat the same procedure on the other side of the extruder. Original Prusa i3 to MMU2S upgrade... -
Page 17: Step 7 Extruder-Idler Disassembly
2.5mm Allen key. Keep the shaft for later. Take out the Bondtech gear, BUT BE CAREFUL, there are two bearings inside. Don't lose them!!! The printed part will be replaced with a new one. Original Prusa i3 to MMU2S upgrade... -
Page 18: Step 9 Haribo Time
Does it move? Great the test is over for now ;) Don't pull hard! Ensure first that all screws are released properly. We are done here, let's move to the next chapter. Original Prusa i3 to MMU2S upgrade... -
Page 19: Mk3S/Mk2.5S Extruder Upgrade
3. MK3S/MK2.5S extruder upgrade Original Prusa i3 to MMU2S upgrade... -
Page 20: Step 1 Extruder-Body Parts Preparation
Insert the adapter inclined, first to the motor side. Push it down and check its upper surface is aligned with the extruder. DON'T use any screw to secure the Adapter-printer-mmu2. It should hold inside the Extruder-body by itself. Original Prusa i3 to MMU2S upgrade... -
Page 21: Step 3 - Ir Filament Sensor Parts Preparation
However, for a better visibility of this guide, some parts of the assembly were done separately from the printer. MK3S/MK2.5S and MMU2S share the same new generation of the IR-sensor, just in a different position inside the extruder. -
Page 22: Step 5 Ir Filament Sensor Assembly
Take cover and place it on the top. The cover is asymmetrical, see the picture. The smaller gap in the cover should be on the left. Secure the IR filament sensor and the cover using an M2x8 screw. Original Prusa i3 to MMU2S upgrade... -
Page 23: Step 7 - Ir Filament Sensor Assembly
Finish the sensor assembly by inserting an M3x40 screw. Make sure all the gaps are gone. The IR filament sensor position will be calibrated later in the upcoming chapter. Without the proper calibration, the MMU2S won't be able to work properly. Original Prusa i3 to MMU2S upgrade... -
Page 24: Step 9 X-Carriage Retightening
Before you push the fan all the way to the left, place the cable in the X-carriage channel. Fix the fan using following screws: M3x14 (3x) M3x20 (1x) The M3x20 screw is also fixing the fan-shroud place it back, in case it fell down. Original Prusa i3 to MMU2S upgrade... -
Page 25: Step 11 - Extruder-Idler Parts Preparation
Idler spring (1x) place the spring on the screw. The screw with the spring might be already in the extruder STEP 12 Bearing assembly Insert both bearings in the pulley. Be aware that bearings can slip out during assembly. Original Prusa i3 to MMU2S upgrade... -
Page 26: Step 13 Extruder-Idler-Mmu2S Assembly
For this step, please prepare: M3x40 screw (1x) Place the Extruder-idler-mmu2s in place and secure it using a M3x40 screw. Don't tighten the screw too firmly, it serves as a shaft for the idler. Check that the idler can rotate freely (the range of the movement is small). -
Page 27: Step 15 X-Carriage-Back Reassembly
MK2.5S extruder differs from now on! Please use another chapter and then return here. MK2.5S extruder cable management. Follow the linked chapter to the very end, apart from the cables you need add one printed part. Original Prusa i3 to MMU2S upgrade... -
Page 28: Step 17 Tightening The Textile Sleeve
Use two zip ties and push them through the upper slots on the cable-holder. Add the cables from the hotend and use the channel in the printed part to arrange them properly. Tighten the zip ties, cut the remaining parts. Original Prusa i3 to MMU2S upgrade... -
Page 29: Step 18 It's Haribo Time
Spool holders with the buffer are easy to make, research shows that 10 % is enough. Preflight calibration and the first flight are almost effortless. Experienced user will require no more than 10 %. Original Prusa i3 to MMU2S upgrade... - Page 30 STEP 19 E-axis is finished! Are we there yet? We are just getting started! Important info only for those, who are upgrading from MMU2 to MMU2S (MMU2S unit already assembled), you can skip to the chapter 6, Electronics and MMU2S unit assembly (Step 23) Check the final look, compare it to the picture.
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Page 31: Idler Body Assembly
4. Idler body assembly Original Prusa i3 to MMU2S upgrade... -
Page 32: Step 1 Tools Necessary For This Chapter
STEP 2 Idler parts preparation For the following steps, please prepare: Idler (1x) 625 bearing (6x) M3x10 screw (2x) M3nS nut (2x) Shaft 5x16sh (5x) Note you need 6 bearings, but only 5 shafts ;) Original Prusa i3 to MMU2S upgrade... -
Page 33: Step 4 Idler Bearings Assembly (Part 2)
Finish bearing assembly with the slot on the right side. Make final a check, ensure both bearings can rotate freely. There should be no increased friction, or bumps, which would slow down the bearing. Original Prusa i3 to MMU2S upgrade... -
Page 34: Step 5 Idler Nuts Assembly
Five or six turns are enough for now. STEP 6 Idler centre bearing assembly Take the remaining bearing and slide it in the centre of the idler. Make sure the bearing is flush (aligned) with the idler surface. Original Prusa i3 to MMU2S upgrade... -
Page 35: Step 7 Final Check
Shaft 5x16sh (1x) Idler motor (the one with a short shaft) (1x) In case of the MMU1 to MMU2S upgrade - use the motor from the disassembled MMU1. This motor was not included in the MMU1-MMU2S upgrade package. The motor is labeled "Extruder" instead of "Idler". -
Page 36: Step 9 Inserting M3Ns Nuts Into Idler-Body
Using fingers, rotate the idler back and forth to ensure the bearings can slide along the grooves easily. Some friction (rubbing) between the parts is acceptable at this stage. Rotation of the idler is limited by the stop on the idler-body. Original Prusa i3 to MMU2S upgrade... -
Page 37: Step 12 Idler Motor Assembly (Part 2)
Make sure the motor is seated properly (in direct contact with the idler-body), then tighten all four screws. Tighten screws on a diagonal. Use the longest 2.5mm Allen key with the ball end to reach the M3 screws on the underside better. Original Prusa i3 to MMU2S upgrade... -
Page 38: Step 13 Idler Motor Assembly (Part 3)
Tighten both M3x10 screws until you reach the motor's shaft. Tighten carefully, as you might crack the printed part (idler)!!! STEP 14 It's Haribo time! Stop for a while and treat yourself ;) Idler assembly is quite easy, 10 % is enough. Original Prusa i3 to MMU2S upgrade... - Page 39 Make sure the shaft rotates freely. The rotation is limited by stops, but within them it should be smooth. Make sure both M3nS nuts are in. Ready for more? Let's proceed to the 5. Pulley body assembly Original Prusa i3 to MMU2S upgrade...
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Page 40: Pulley Body Assembly
5. Pulley body assembly Original Prusa i3 to MMU2S upgrade... -
Page 41: Step 1 Tools Necessary For This Chapter
Insert four nuts from the top of the pulley-body. Insert three nuts from the side of the pulley-body. Finally, insert two nuts from the other side of the pulley-body. Ensure proper alignment of all nuts using 1.5mm Allen key. Original Prusa i3 to MMU2S upgrade... -
Page 42: Step 4 Pulley-Body Assembly (Part 2)
The filament is not part of the upgrade kit, use any 1.75mm you have. Use a straight filament if possible. The pulley motor is not included in the MMU1 to MMU2S upgrade kit, see the next step. Original Prusa i3 to MMU2S upgrade... -
Page 43: Step 7 Mmu1 To Mmu2S Upgrade (Part 2)
STEP 7 MMU1 to MMU2S upgrade (part 2) This step is valid only for those, who are upgrading from MMU1 to MMU2S. Rotate the flat part of the shaft in the direction of the cable. Insert bundled pliers to create a gap between the motor and the shaft coupler. If you want to be precise, the gap should be 10 mm. -
Page 44: Step 8 Mmu1 To Mmu2S Upgrade (Part 3)
5. Pulley body assembly STEP 8 MMU1 to MMU2S upgrade (part 3) This step is valid only for those, who are upgrading from MMU1 to MMU2S. Insert the shaft into the shaft coupler and rotate the flat part against the lock screw. -
Page 45: Step 10 Pulley Motor Assembly (Part 2)
Make sure the lock screw is still perpendicular to the flat part of the shaft and tighten it. Use reasonable force as you might strip the screw. Repeat these instructions on the 4 remaining pulleys. Original Prusa i3 to MMU2S upgrade... -
Page 46: Step 12 Front-Ptfe-Holder Parts Preparation
The chamfered end of the tube must be facing out!!!! Slide on the front-PTFE-holder, note the upper circular openings are for the tubes. Secure the front-PTFE-holder using four M3x10 screws. Original Prusa i3 to MMU2S upgrade... -
Page 47: Step 14 Selector-Finda Parts Preparation
Slide in the M3n nut. If possible use long screw from the "Spare" bag or from your MK3 kit. Press the nut in using hand, hammer shouldn't be necessary. Insert remaining three M3nS nuts in the selector-finda body, all the way in. Ensure alignment with the 1.5mm Allen key. Original Prusa i3 to MMU2S upgrade... -
Page 48: Step 16 Selector-Finda Assembly (Part 2)
For the following steps, please prepare: mmu2-selector-front-plate (1x) M3x10 screw (7x) Smooth rod 5x120sh 120 mm (2x) Selector motor (1x) Lead screw nut (1x) The nut is on the motor, take it off the lead screw. Original Prusa i3 to MMU2S upgrade... -
Page 49: Step 18 Nut Assembly
The angled edge should point toward the centre of the selector-finda body. Secure it with two M3x10 screws. In the next step we will assemble the blade, but keep the parts you have prepared at step 17, we will use them soon. Original Prusa i3 to MMU2S upgrade... -
Page 50: Step 20 Blade-Holder Parts Preparation
Before you tighten the screws fully, ensure the blade is seated properly. Gently push it with the Allen key. From now on pay attention while handling this part. The blade sticks out and you can cut yourself! Original Prusa i3 to MMU2S upgrade... -
Page 51: Step 23 Selector Motor Assembly (Part 2)
Rotate with the shaft until the motor touches the pulley body. Make sure the selector-finda is all the way to the left. Secure the Selector motor using three M3x10 screws. Original Prusa i3 to MMU2S upgrade... -
Page 52: Step 24 Superfinda Sensor Parts Preparation
It is a good starting point to line up the bottom of the SuperFINDA probe exactly with the top of the inspection window when looking from the selector motor side. Insert M3x10 screw as in the picture, tighten it very slightly. Original Prusa i3 to MMU2S upgrade... -
Page 53: Step 26 Mmu2 Unit Parts Preparation
Push the bearing in. Make sure it is aligned with the pulley-body. If the bearing can't be pushed in easily, check the circular opening in the pulley- body and clean up any print imperfections if neccessary. Original Prusa i3 to MMU2S upgrade... -
Page 54: Step 28 Mmu2 Unit Assembly (Part 2)
Push the bearing in. Make sure it is aligned with the pulley-body. STEP 29 MMU2S unit assembly (part 3) Let's assemble the MMU2S unit ;) Prepare the pulley-body and idler-body as in the picture. Note position of the motors. "Rotate" the idler-body on the pulley body. -
Page 55: Step 31 Mmu2 Unit Assembly (Part 5)
Turn the side with one motor towards you. Use second M3x10 screw to secure the shaft against falling out. Tighten the screw to the surface of the printed part. Original Prusa i3 to MMU2S upgrade... -
Page 56: Step 32 Tensioning Parts Preparation
5x15s (2x) STEP 33 Tensioning system assembly Slide the springs on the screws. Insert screws with the springs in the holes on idler-body. Tighten the screw heads slightly below the surface of the printed part. Original Prusa i3 to MMU2S upgrade... -
Page 57: Step 34 It's Haribo Time
Quite challenging chapter, wasn't Pulley body assembly required your attention, eat no less than 20 % of all bears. STEP 35 Final check of the MMU2S unit Make sure all parts are tightened. The next chapter is waiting! Electronics and MMU2S unit assembly... -
Page 58: Electronics And Mmu2S Unit Assembly
6. Electronics and MMU2S unit assembly Original Prusa i3 to MMU2S upgrade... -
Page 59: Step 1 Tools Necessary For This Chapter
6. Electronics and MMU2S unit assembly STEP 1 Tools necessary for this chapter Please prepare tools for this chapter: 2.5mm Allen key for M3 screws 2mm Allen key for nut alignment Needle-nose pliers for zip tie trimming Philips screw-driver for power... -
Page 60: Step 3 Electronics Assembly
Insert three M3n nuts in the ele-cover. Use a flat surface to push them in if necessary. Slide in the MMU2S control board. Make sure the three buttons are all the way through on the other side. Secure the board with three M3x6 screws. Tighten carefully. -
Page 61: Step 5 Connecting The Cables
6. Electronics and MMU2S unit assembly STEP 5 Connecting the cables Prepare the MMU2S unit and the board assembly as in the picture. Follow the cables to connect them correctly. Start from the left: Signal cable (use side with safety latch) -
Page 62: Step 7 - Cable Management (Part 1)
STEP 7 Cable management (part 1) Prepare the MMU2S unit and the electronics assembly like in the picture. Position the side with two motors to the left and signal cable to the left as well. Place the electronics on the MMU2S unit. The connectors must be facing towards you. -
Page 63: Step 9 - Cable Management (Part 3)
Take the signal and power cable (first two from the left). Bundle them together and wrap around 10 cm (3.94 inch) in the textile sleeve. Slide the sleeve towards the MMU2S unit as much as the cable allows. Take the bundle from the motors and SuperFINDA add the textile sleeve above it, and tighten it using the third zip tie. -
Page 64: Step 11 Ptfe Tubes Parts Preparation
6. Electronics and MMU2S unit assembly STEP 11 PTFE tubes parts preparation For the following steps, please prepare: mmu2-rear-PTFE-holder (1x) M3x18 screw (4x) M3n nut (4x) PTFE tube 4x2x650 (5x) PTFE tubes are installed as the last item to avoid damage to them. Be careful during the assembly ;) -
Page 65: Step 13 - Ptfe Tubes Assembly (Part 2)
STEP 13 PTFE tubes assembly (part 2) Take the first PTFE tube and slide it inside the MMU2S unit. All five tubes are bent in one direction, make sure the free end is now pointing up. There is a circular hole for each PTFE tube, you should be able to press at least 0.5 to 1 mm (0.02 - 0.04 inch) of the tube inside the hole. -
Page 66: Step 15 Frame Holder Parts Preparation
SuperFINDA cable, which can get broken, if you tilt the unit on the SuperFINDA sensor. Turn the MMU2S unit upside down like in the first picture. Locate the four holes for the M3 screws. Make sure there are nuts in them. -
Page 67: Step 17 Mmu2S Unit Is Finished
6. Electronics and MMU2S unit assembly STEP 17 MMU2S unit is finished! Great job, the MMU2S unit is finished! Compare the picture to your assembly. DO NOT ATTACH the MMU2S unit onto the printer FRAME yet!!! Wait for the instructions. -
Page 68: Step 19 Ptfe Tube Assembly
For the following steps, please prepare: Original Prusa i3 MK3S/+ or MK2.5S printer MMU2S unit PTFE tube 8mm wrench Before you plug in the MMU2S unit to the printer, please make sure the printer is TURNED OFF! Original Prusa i3 to MMU2S upgrade... -
Page 69: Step 21 - Assembling The Mmu2S Unit (Part 2)
STEP 21 Assembling the MMU2S unit (part 2) The MMU2S unit should be placed in the middle on the top part of the aluminium frame (next to the Prusa logo). Place the unit on the frame, do not try to fix it for now. -
Page 70: Step 23 - Connecting The Extruder And Mmu2S Unit
Take the PTFE tube you prepared earlier and connect it to the extruder. Both ends of the tube are the same. Use fingers to tighten the thread. Take the second end of the tube and connect it to the MMU2S unit. Tighten the fitting using fingers. -
Page 71: Step 25 Connecting The Electronics
Place the door back. Insert back the hinge. Tighten the M3x10 screw. Insert the cable bundle from the MMU2S unit. Place back the clip and tighten it. Attach the extruder cable bundle to the hooks on the inside of the Einsy-base by using two zip-ties. -
Page 72: Step 27 - Connecting The Electronics Mk3S
Connecting MMU2S unit to the printer differs depending on the printer you have. For the MK3S/+, please use this step. For the MK2.5S please skip to the next. MMU2S Signal cable (upper row of the pins, brown wire in the connector facing left) -
Page 73: Step 28 Connecting The Electronics Mk2.5S
Connect the PSU cable to the power cable from the MMU2S unit. See the picture and ensure the connector is all the way in. Plug the power cable from the MMU2S unit to the board, where the PSU cable was plugged previously. -
Page 74: Step 29 Connecting The Electronics Mk2.5S (Optional)
6. Electronics and MMU2S unit assembly STEP 29 Connecting the electronics MK2.5S (optional) In case you upgraded from MK2.5 printer, you have to reconnect the entire extruder: P.I.N.D.A. probe (v-cable, 4 wires) Left hotend fan (v-cable, 3 wires) Extruder motor (yellow label with "E") -
Page 75: Step 31 It's Haribo Time
6. Electronics and MMU2S unit assembly STEP 31 It's Haribo time! Your sweets are well deserved, this was a tough part! Electronics assembly is the last chapter with high level of difficulty, consume 25 %. STEP 32 Final check! Congrats, you've made through the... -
Page 76: Spool Holder And Buffer Assembly
7. Spool holder and buffer assembly Original Prusa i3 to MMU2S upgrade... -
Page 77: Step 1 Tools Necessary For This Chapter
Take the black plastic spool holder base and turn it upside down. Using cloth + detergent or IPA clean all four corners from dust and grease. Let the surface fully dry and proceed to the next step. Original Prusa i3 to MMU2S upgrade... -
Page 78: Step 3 - Sticking Foam Pads
STEP 4 Assembling the spool shafts Let's assemble the shafts holding the spools, you will need: Bearings (4x) Shaft (2x) Shafts can be black or silver, the dimensions are the same. Original Prusa i3 to MMU2S upgrade... -
Page 79: Step 5 - Assembling The Spool Shafts
The rubber seals next to the bearing were used for the purpose of the photography, no need to use them. STEP 6 Assembling the spool holder (part 1) For the following steps, please prepare: spool holder base (1x) shaft with bearings (2x) mmu2-s-holder-endstop (4x) Original Prusa i3 to MMU2S upgrade... -
Page 80: Step 7 Assembling The Spool Holder (Part 2)
The list continues in the next step. The Buffer plates are protected by a thin protective film on one or both sides, you can remove it now. Be careful during the assembly to avoid scratches. Original Prusa i3 to MMU2S upgrade... -
Page 81: Step 9 New Buffer Parts
New version with a longer hook compatible with MK3S/+ and MK2.5S. Please jump to the Step 10 Old version with a shorter hook compatible only with MK3S/+. Please jump to Step 15 All printable parts are also available at prusa3d.com/prusa-i3-printable-parts Original Prusa i3 to MMU2S upgrade... -
Page 82: Step 10 Buffer Parts Preparation (New Version)
IMPORTANT: the holes for the PTFE tubes have to match between both parts. See the picture. Make sure you won't flip them. On one side you have 3 holes, same goes for the second printed part. Other side has only 2 holes. Original Prusa i3 to MMU2S upgrade... -
Page 83: Step 11 - Buffer Assembly - Printer Part (New Version)
Make sure the side with two holes is on the right. Seat the printed part on the other side as well. Secure the printed part using two screws M3x40. Don't turn the Buffer over on its side yet. Original Prusa i3 to MMU2S upgrade... -
Page 84: Step 13 - Warning: Tightening The Parts (New Version)
Secure each printer part with a M3x40 screw. Use six M3n nuts from the other side and tighten the screws. Keep in mind the proper tightening. Avoid deforming the plates! Now, skip to the Step Original Prusa i3 to MMU2S upgrade... -
Page 85: Step 15 Buffer Parts Preparation (Old Version)
IMPORTANT: the holes for the PTFE tubes have to match between both parts. See the picture. Make sure you won't flip them. On one side you have 3 holes, same goes for the second printed part. Other side has only 2 holes. Original Prusa i3 to MMU2S upgrade... -
Page 86: Step 17 Buffer Assembly - Spools Part (Old Version)
Make sure the side with two holes is on the right. Seat the printed part on the other side as well. Secure the printed part using two screws M3x40. Don't turn the Buffer over yet. Original Prusa i3 to MMU2S upgrade... -
Page 87: Step 18 - Warning: Tightening The Parts (Old Version)
Take three s-buffer-spacer-hook parts and place them on the other side. Secure each s-buffer-spacer-hook with a M3x40 screw. Use six M3n nuts from the other side and tighten the screws. Keep in mind the proper tightening. Avoid deforming the plates! Original Prusa i3 to MMU2S upgrade... -
Page 88: Step 20 Adding The Ptfe Tubes (Both Versions)
If not, release the screw a bit. STEP 21 It's Haribo time! That was easy, right? Spool holders and Buffer are easy to make, research shows that 10 % is enough. Original Prusa i3 to MMU2S upgrade... - Page 89 Do they look like those in the photo? Note that the hooks on the buffer will differ depending on your version. There are 5 screws (M3x12) remaining, keep them for connecting the printer tubes to the buffer, later while reading the Handbook. Let's continue with in the next chapter. Original Prusa i3 to MMU2S upgrade...
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Page 90: Preflight Check & Calibration
8. Preflight check & Calibration Original Prusa i3 to MMU2S upgrade... -
Page 91: Step 1 Superpinda Calibration Preparation (Optional)
Check again while looking from a different angle that the nozzle is slightly touching the heatbed. Make sure the nozzle is not scratching the surface and that the heatbed doesn't get bent during the whole procedure. Original Prusa i3 to MMU2S upgrade... -
Page 92: Step 4 Superpinda Adjustment (Part 3)
!!! DO NOT use glue to fix the SuperPINDA probe in the holder, you won't be able to release it again !!! The correct height of the SuperPINDA probe compared to the nozzle should be similar to the one in the last picture. Original Prusa i3 to MMU2S upgrade... -
Page 93: Step 5 Two Types Of The Mmu Firmware
MMU2S board firmware: This firmware is flashed to the board inside the MMU2S unit on the top of the frame. Use Micro-USB cable. (e.g. prusa3d_fw_MMU2board_1_0_6.hex) Printer and MMU2S unit firmwares are both available to download as one package prusa3d.com/drivers PrusaSlicer won't let you accidentally flash incorrect firmware to each board. -
Page 94: Step 6 Download The Necessary Software
Download the zip file with the latest MMU2S firmware to your computer and unzip Note there are two types of the firmware for the MMU2S. One is for the MMU2S unit (top of the frame), the other for printer itself. -
Page 95: Step 9 Adding Mmu2S Settings To The Prusaslicer
From the top menu select Configuration -> Configuration Wizard Look for the MMU2S options and select your printer Click Next, then Finish Expand the Printer menu and check if the MMU2S option is present. If not, please repeat the process again. Original Prusa i3 to MMU2S upgrade... -
Page 96: Step 10 Ir Filament Sensor Calibration
The Fil. sensor: line on the LCD should indicate value 1 with the Allen key (or a filament) inserted. Move the chimney left or right until the number on the LCD reliably changes accordingly when inserting and removing the Allen key from the Bontech gears in the extruder! Original Prusa i3 to MMU2S upgrade... -
Page 97: Step 13 Superfinda Sensor Calibration Preparation
8. Preflight check & Calibration STEP 12 IR filament sensor calibration 3 Calibrating the IR filament sensor is super-crucial in order for MMU2S unit to work properly. Please, repeat this check several times. Confirm the sensor works correctly: See the LCD again if the Fil. sensor number displays 1 when Allen key (/filament) is inserted all the way or 0 when it´s not inserted all the way in. -
Page 98: Step 14 Superfinda Calibration
Menu -> Support -> Sensor info -> FINDA. After you are done calibrating your SuperFINDA, fully tighten the screw holding the sensor in place. Attach the PTFE tube with fitting back onto the MMU2S unit. Original Prusa i3 to MMU2S upgrade... -
Page 99: Step 15 Preparing To Load Filaments For The Test Setup
STEP 16 Connecting the rear PTFE tubes Insert the PTFE from MMU2S unit to the buffer. Insert the M3x12 screw next to the PTFE and tighten it just so the PTFE doesn't come out. -
Page 100: Step 17 Loading A Filament Into The Buffer
PTFE tube until the MMU units start pulling the filament in. The filament must be straight and have a sharp tip. Filament positions are labeled 1,2,3,4,5 from the left to right. Repeat for the second filament. Original Prusa i3 to MMU2S upgrade... -
Page 101: First Flight
9. First flight Original Prusa i3 to MMU2S upgrade... -
Page 102: Step 1 Z Axis And First Layer Calibration (Optional)
Or go to the folder Prusa3D/Sample objects/MMU2(s) via the link on your desktop. The link installs together with a full installation of the PrusaSlicer. load the PLA_Sheep_200um G-code to SD card and insert the card into your printer. Original Prusa i3 to MMU2S upgrade... -
Page 103: Step 3 Start The Print
All the information regarding calibration, how to organise the printer, buffer, spools, or troubleshooting tips are all in the printed or online Handbook. To download the Handbook or if you encounter any issues, please visit our knowledge base at: http://help.prusa3d.com/en/tag/mmu2/ Original Prusa i3 to MMU2S upgrade... -
Page 104: Step 5 Printable 3D Models
Time to print your own designs! Basic steps are described in our G-code preparation for multi material print section. Definitely try out the MMU Painting function in PrusaSlicer for the models with a single body. Original Prusa i3 to MMU2S upgrade... -
Page 105: Step 7 Making Your Own Multi-Material Models
Looking for an inspiration on new projects? Check our blog with weekly updates. If you need help with the build, check out our forum with great community :-) All Prusa services share one account. Original Prusa i3 to MMU2S upgrade... -
Page 106: Step 9 It Finally Is A Haribo Time
It finally is a Haribo time! That's it, the assembly is over. Eat the remaining bunch of bears. We hope, you've enjoyed the build. Don't forget to leave feedback and see you in the next one :) Original Prusa i3 to MMU2S upgrade... -
Page 107: Manual Changelog Mmu2S
Manual changelog MMU2S Original Prusa i3 to MMU2S upgrade... -
Page 108: Step 1 Versions History
Manual changelog MMU2S STEP 1 Versions history Versions of the MMU2S manual: 03/2019 - Initial version V1.00 12/2020 - Update V1.01 11/2021 - Update V1.02 Major changes for each version are described in the next steps. STEP 2 Changes to the manual (1) - Page 109 Notes:...
- Page 111 Notes:...
- Page 113 Notes:...
- Page 115 Notes:...
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