Swapper3D Instructions

Upgrade printer with QuickSwap-Hotend (Prusa i3 MK3)

Add ‘T-Mount (Improved)’ to the QuickSwap-hotend cooling block

Instructions:

  1. Place the T-nut (blue arrow) on the holes (yellow arrows) on top of the QuickSwap-hotend. You may find the T-nut in the Prusa plastic parts baggy.
  2. Insert and tighten two(2) M2.5x10mm socket cap screws (pink arrows) found in the QuickSwap-Hotend screw pack.
  3. Tighten them with a 2mm hex end screwdriver until they are very snug

Remove tension screw

Instructions:

  1. NOTE 1: Because Prusa has about a million variations of their printers we cannot document them all, your extruder may be a slightly different version, and so may look different. But the general steps apply. The screws and parts we remove should still exists and you should be able to remove or assemble them.
  2. Note 2: Keep all the screws and parts you remove safe and in order of disassembly, this will help you put it all back together afterwards. Taking your own pictures or notes to remember which length screw, and which part goes where, will help you greatly. Try to keep the screws and nuts in the parts they were attached to until needed.
  3. Note 3: All the Prusa screws use a 2.5mm hex end screwdriver
  4. Using a 2.5mm hex end screwdriver,
  5. remove the tension screw (pink arrow) from the left side of the extruder (yellow arrow) by turning the screw counter-clockwise
  6. Completely withdraw the screw and spring from the extruder

Remove the pressure door

Instructions:

 

  1. Remove the two(2) extruder screws from the rear of the extruder.
  2. Now that the tension screw has been removed, you should be able to remove pressure door from the right side of the extruder (yellow arrow)

Remove cooling fan

Instructions:

  1. Using a 2.5mm hex end screwdriver remove the two(2) screws holding the part cooling fan in place (yellow arrows)
  2. Be careful not to damage the fan wire
  3. Push the fan in between the top and bottom x axis belts (pink arrows)

Remove cooling fan shroud

Instructions:

  1. Remove the screw (pink arrow)
  2. and remove the fan shroud (yellow arrow)

Remove Cooling fan bracket

Instructions:

  1. remove the one(1) screw holding the cooling fan bracket in place (orange arrow)

Remove extruder cover

Instructions:

  1. Remove the one fan screw (red arrow)
  2. Remove the two(2) screws holding the extruder cover on (pink arrows)
  3. remove the extruder cover (yellow arrow)

Remove extruder

Instructions:

  1. unscrew the remaining hotend cooling fan screws (yellow arrows)
  2. Let the fan dangle by its wires
  3. remove the extruder motor(purple arrow) by pulling it towards the front of the printer and wiggling it side to side. It should just slide out.
  4. Let the stepper dangle by its wires
  5. Unscrew the heater and temperture sensor from the hotend heater-block
  6. Remove the hotend (orange arrows), leaving the heater and temp sensor dangling (blue arrows)

Remove the filament sensor and housing

Instructions:

  1. Remove the two(2) screws holding the filament sensor and housing in place (red arrows)
  2. pull the filament sensor off the extruder and move to the side

Remove the PINDA probe

Instructions:

  1. Remove the screw holding the PINDA probe (orange arrow)
  2. and remove the probe by wiggling it as you pull upwards (pink arrow)

Remove the old extruder body

Instructions:

  1. Remove the 2 screws holding the extruder body in place (pink arrows)
  2. Pull the extruder body out

Remove the nuts from the extruder body

Instructions:

  1. Take the four(3) nuts out of the back of the old extruder body. (orange arrows)
  2. Take the one(1) nut out of the front of the old extruder body (yellow arrow)
  3. TIP: Use a 2mm hex head screwdriver to pop the nuts out.

Move nuts to ‘ExtBody40mm’

Instructions:

  1. Using the nuts you peviously removed from the old extruder body,
  2. Make sure to press the square nuts in all the way. It’s correct when the hole in the nut will be aligned concentric to the hole in the plastic part (PINK and RED arrows). If you have trouble pressing the nut in them use the tip of a 1.5mm screwdriver (hex end or flat end) to press the nut in all the way. Be careful, if you press too hard or the wrong way the part could break!
  3. Move the nuts over to the new extruder body with the “T” shaped hole for the QuickSwap-Hotend (yellow arrows)
  4. Pro Tip: Using the “Too long screw” method can be helpful to guide each nut in a seat it in the hole all the way.

Route the filament sensor wire

Instructions:

  1. Untangle the filament sensor from the fan and stepper wires
  2. make sure the filament sensor wire is closest of all wires to the extruder wire channel
  3. Press the filament sensor wire into the channel (pink lines and arrows)
  4. drap the filament sensor over the top of the extruder channel towards the rear of the printer

Replace the extruder body with ‘ExtBody40mm’

Instructions:

  1. Replace the same 2 screws into the new extruder body (yellow arrows).
  2. Align the end of the screws and insert into the x carriage hole (pink arrows)
  3. tighten the screws pretty good. The extruder body should not wobble.

Move filament plug over

Instructions:

  1. Push the filament plug (pink arrow) into the extruder body.
  2. It only fits one way, and there are no screws holding it in.

Pro tip: If your plug doesn’t fit you can find the printable file here the part is called “adapter-printer-mmu2s_MK3S_MK25S.stl”

Attached QuickSwap-Hotend

Instructions:

  1. Orient the QuickSwap-Hotend to align the Heater(cyan arrow) with the Heater hole (purple arrow),
  2. And align the temperature sensor (yellow arrow) with its hole (blue arrow)
  3. Rotate the QuickSwap-Hotend up , and press it into the “T” shaped hole (pink arrow and pink “T”)
  4. As you press it into the T hole, keep pushing the heater and temp sensor from behind further into their respective holes until they are completely in their holes.
  5. Keep pressing the QuickSwap-Hotend into the T hole until the hole in the top of the QuickSwap-Hotend is aligned concentric to the filament guide hole in the extruder (orange arrow and cylinder)

Replace the extruder insert with ‘ExtInsert.stl’

Instructions:

  1. remove the 2 screws holding the extruder insert onto the stepper motor (pink arrows)
  2. Push the 2 screws that you just removed into the new extruder insert (red arrows)
  3. orient the extruder insert with the “T” up (yellow arrow) and the stepper motor with the wire up (green arrow)
  4. tighten the 2 screws into the stepper motor

Insert the TEFLON TUBE into the top of the T-nut hotend

Instructions:

  1. The teflon tube will go in the orange spot (orange arrow)
  2. Make sure the inner chamfered (aka tapered) end of the teflon tube is up
  3. Insert the teflon tube all the way
  4. make sure the top of the tube is below the red line (red arrow)

Add the Heater and thermistor retaining screws to the heaterblock

Instructions:

  1. Gently lay the printer on its right side
  2. From behind the extruder,
  3. using two(2) M3x10mm socket cap screws,
  4. secure the heater and temp sensor in place by,
  5. tightening the screws into the heater securement hole (green arrow),
  6. and the temp sensor securement hole (red arrow)

Put the stepper motor back on

Instructions:

  1. Align the “T” shape with the T nut on the QuickSwap-Hotend (red lines)
  2. Press the stepper motor into place
  3. Use the screws you previously removed
  4. add one 40mm screw at the back of the extuder (orange arrow).
  5. add the pressure door back on (Green arrow)
  6. add in the other 40mm screw that holds the pressure door in place at the rear of the extruder (yellow arrow)
  7. Attached the filament sensor with the original screws (Blue arrows)

Add the pressure door pressure screw & spring from the left side

Instructions:

  1. insert the pressure screw into the hole (pink arrow)
  2. tighten until the screw threads stick out the pressure door by approx. 3mm

Attach the ‘ExtCvrBlank.stl’

Instructions:

  1. Move the orignal square nutover to the new extruder cover (Green arrow)
  2. Use a 1.5mm hex driver screwdriver end to press on the side of the square nut until the hole of the nut is concentric to the hole of the plastic
  3. Attach the new fan bracket (stl file name ‘ExtCvrBlank.stl’)
  4. using the 2 original part cooling fan bracket long screws
  5. this will hold the extruder together so tighten them well

Route the stepper and fan wires

Instructions:

  1. using the end of a 3mm hex screwdriver,
  2. press the stepper motor wire (green,red,black,blue wire) around under the edge of the channel (pink lines and arrows)
  3. press the the black wire of the fan into the same channel,
  4. Press it all the way under the overhang (pink arrows and lines), so that it holds the stepper wires into the channel
  5. both wires must be pressed all the way into the channel so that they are out of the way of the fan for the next step.

Reattach the hotend cooling fan

Instructions:

  1. Attach the hotend cooling fan using the original 3 screws in these places only (pink arrows)
  2. leave the bottom right hole for the fan shroud

Reattach the layer cooling fan angle bracket

Instructions:

  1. Ensure the hex nut is in the bracket (green arrow)
  2. Secure the fan angle bracket to the hole on the fan bracket (Yellow arrow)
  3. The angle is away from the stepper motor (pink arrow)
  4. Tighten the one screw (orange arrow)

Reattach the layer cooling fan shroud

Instructions:

  1. attach the fan shroud by pressing it up into place (3 pink arrows)
  2. and inserting the the remaining fan screw through the fans bottom right hole (left pink arrow)

Reattach the layer cooling fan

Instructions:

  1. insert the fan into the cooling shroud
  2. while holding it in place,
  3. Replace the 2 original fan screws
  4. tighten the screws

Reattach the PINDA probe

Instructions:

  1. insert the PINDA probe (pink arrow
  2. approximately set the pinda probe height. The last step will be setting the correct height.
  3. Insert the PINDA screw (yellow arrow) and turn a couple times but DON’T TIGHTEN
  4. The PINDA cable needs to be adjusted out of the way of the new QuickSwap-Hotend Locking arm, so
  5. While wearing eye protection, CAREFULLY cut the zip ties holding the PINDA cable at the back of the printer
  6. The pinda cable has a loop now. You need to get rid of that loop in the front, and move it to the back. You may need to unwrap some of the wire wrap to access it.
  7. from the back of the printer find the Pinda cable and Pull it until the front loop is gone and moved to the back (green arrow)
  8. Make a loop of wire at the back (orange arrow)
  9. Replace the zip ties at the rear (Blue arrows)
  10. While wearing safety glasses, cut the ends off the zip ties

Tighten the heater and temp sensor wires

Instructions:

  1. VERY carefully, cut off the lower zip ties holding the heater and thermistor wires (pink arrows)
  2. gently pull the wires until all the slack is taken towards the rear of the printer (yellow arrow)
  3. add new zip ties (red arrows) and tighten the zip ties
  4. while wearing safety glasses, cut the ends off the zip ties

Calibrate the first layer

Instructions:

  1. Install a QuickSwap-Insert into the QuickSwap-Hotend as per the instructions in the primer (found here)
  2. Insert a filament into the extruder as per the normal way
  3. Follow the Prusa guide for calibrating the first layer on the i3
  4. PRO TIP: Printing with the QuickSwap-Hotend requires the filament/nozzle  temperature to be set +20C higher than before. But during the automated first layer calibration the default temp should work fine.
  5. You need to follow steps one(1), two(2), three(3), and nine(9) in the Prusa3D guide found here.

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