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simplify3d dual printing setup

AIBECY EXTRUDER KIT HOT END 2 IN 1 OUT

Simplify3d dual colour printing setup

I have used the setup to match the Aibecy Extruder Kit Hot End 2 in 1 Out

 

 AIBECY EXTRUDER KIT HOT END 2 IN 1 OUT

“Dual Extrusion” wizard

The “Dual Extrusion” wizard makes it easier to set up a Simplify3d dual colour printing setup profile.

  1. Let’s begin by going to “Help > Configuration Assistant” and set up the parameters for your printer and give the printer a name, then make sure the printer profile is loaded.
  2. Next, import or drag and drop the two .stl files and the slicer will place them in the centre of the plate as if they were two independent objects.
  3. Then, in “Tools > Dual Extrusion Wizard” configure the settings:
  4. Give a name to the process (or accept the suggested one)
  5. Choose a print profile from those present (load the attached profile into the slicer)
  6. Choose which materials to use

In the Dual Extrusion Wizard, you can assign to each tool the relevant .stl files as we want them to be printed. If the options do not satisfy us, it is always possible to modify later.

ATTENTION: make sure that the option “group and align models” is checked at the bottom left, to make sure that our two files are aligned to create the object we want to print.

Click OK and go on.

Now our object has become a unique object formed by the two coincident .stl files

Click on “Edit process setting” and open our print profile.

Now we can make all the changes we want and create print profiles, the usual stuff for setting up a print and (Save as New) for future use. Choose the advanced mode to have full control of all settings.

On the left, we will see our tools (T0 and T1) and selecting them one at a time we configure at best, just like for the single extrusion, our extruders. Remember to do it for both because they are two independent tools. The two extruders will have in common the same thermistor and therefore the same printing temperature.

Scroll through the various TABs and configure everything (later we will see in detail the “additions” TAB, to configure the purge tower and the ooze shield) until you get to the “Script” TAB.

The 2 in 1 system requires one filament to be retracted and the other to be moved forward. All this is managed in the “tool change script” TAB that will contain the specific Gcode. Such Gcode works with the “StartGcode” and with the “EndGcode” that must take into account the mutual instructions.

The printer used for this guide uses a 300×300 plate, for example.

Now just adjust X Y and Z limits in the code to fit your printer and your Simplify3d dual colour printing setup profile.

 

Gcode

3d print 2 colours: Ending script

G92 E0 ; resets extrusion length

G1 E-75 F10000 ; retract 50mm at full speed****

G92 E0 ; resets extrusion length

M104 S0 T0 ; switches off main nozzle heating (T0)

M104 S0 T1 ; switches off secondary nozzle heating (T1)

M190 S0 ; turn off plate heating

G1 X153 Y340 Z250 F2000; Get extruder out of way. Uncomment to use!

M84 ; turn off ALL motors

M300 S300 P1000 ; acoustic signal at the end of printing

M107 ; turn off the fan

 

3d print 2 colours: Starting script

G90 ; absolute coordinates

G21 ; unit of measurement in mm

G28 ; homing X Y and Z

G1 Z20 F2000 ; raises the Z by 20mm to a speed of 16mm/s ****

G1 X345 Y340 F3000 : go here ****

T0 ; force T0

G92 E0 ; reset the extrusion length

G1 E80 F180 ; extrude and even out previous print EndGcode

G92 E0 ; reset the extrusion length

M117 Replicating part…

 

ChangeTool Script:

T[old_tool]

G92 E0 ; reset the extrusion length

G1 E-75 F10000 ; retract 50mm at maximum speed****

G92 E0 ; reset the extrusion length

G1 X345 Y340 F3000 ; go to the purge zone with XY****

G1 Z0.1 F[travel_speed] ; go to the bleed zone with Z****

T[new_tool]

//{IF NEWTOOL=0}M109 S230 T0 ; If T0 is the active extruder then wait for the printing time

//{IF NEWTOOL=1}M109 S200 T1 ; If T1 is the active extruder then wait for the printing time

G92 E0 ; reset the extrusion length

G1 E75 F180 ; 45 (of 50. missing 5) 40mm/s **** filament at 40mm/s

G92 E0 ; reset the extrusion length

G1 E5 F180 ; extrude 5mm (of the remaining 5) of 3mm/s filament

G92 E0 ; reset the extrusion length

G1 E25 F180 ; extrude 25mm of filament at 3mm/s to purge old colour ****

G92 E0 ; reset the extrusion length

G1 X330 F[travel_speed] ; moves the plate to cut the filament

G1 E-5 F3000 ; retract 5mm to avoid spider webs ****

G92 E0 ; reset the extrusion length

G1 Z[next_position_z] F[travel_speed] ; moves to the next Z printing position

G1 X[next_position_x] Y[next_position_y] F[travel_speed] ; moves X and Y to the next print position

G1 E4 F180 ; extrude when retracted (5mm) ****

G92 E0 ; reset extrusion length and go

 

The ooze shield

The ooze shield, on the other hand, is useful whatever the purging method chosen. It is a sort of barrier around the piece for its entire height. It was designed for double nozzle extruder systems (e.g. chimaera) and was used to prevent oozing – dripping – of the nozzle not in use. Strictly speaking, with a 2-in-1, it is not compulsory, but using it has advantages. For example, after changing the thread, it does not print the workpiece directly and is therefore useful for bringing the filament under pressure in an optimal way. It eliminates a few drips that can always occur on the way from the purging area to the moulded part. Helps the action of the fan duct, etc.

It can have various shapes (vertical, drop, contour), with different angles of “overhang”, number of loops of your choice. Here is presented the waterfall version with an overhang at 0, a loop. It is advisable to make various experiments and check the result in the preview.

NOTE: The ooze shield generally has only one loop. This results in a very small adhesion area and the consequent risk of the ooze shield detaching from the cymbal during printing. Giving a few turns of brim easily reduces this risk.

Once everything is configured click on OK.

In the main screen click on “prepare to print” (select “select all” in the process window that will open) and click on ok

All you have to do is send the file to print!

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