Is Anyone doing research into dual head RepRap?8-) Now that there has been advances into the pla/pva dissolving printing (as posted here and on MAKE), I was wondering if anyone has come up with a dual head unit for a reprap yet? and whatever changes in the software it needs to run it. I wasnt too concerned with this before, but now with the ability to print a dissolvable form, I think this is the next step in the 3d printer that needs to be pushed! I know makerbot has been doing it for a while now.. thanks! Jeff https://reprap.org/forum/read.php?1,116114,116114#msg-116114 Tue, 12 May 2026 02:22:03 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,116114,462779#msg-462779 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,462779#msg-462779
i've already using my arduino mega2560 ramps1.4 single nozzle

from this circuit i wanna go for dual nozzle dual extruder....]]> jeeva djiva General Fri, 30 Jan 2015 02:24:33 -0500 https://reprap.org/forum/read.php?1,116114,462538#msg-462538 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,462538#msg-462538 http://www.okob.net/projects/reprap_x2v3/default.htm
instead of this:
http://www.okob.net/projects/reprap/default.htm

The firmware changes are all there. I'm using my own mod for Marlin (Marlin X2) that was written before mainstream had support for independently moving X-carriages, but the concept is the same. X2 has more flexible dual extruder support, a few other tweaks and slightly different command set, but testing is limited to RAMPS 1.4 electronics and I'm only merging from mainstream if find it necessary:
http://www.okob.net/projects/reprap_x2v3/firmware.htm]]> dob71 General Thu, 29 Jan 2015 13:46:32 -0500 https://reprap.org/forum/read.php?1,116114,462416#msg-462416 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,462416#msg-462416 [www.youtube.com]
There is no need to redo it]]> Srek General Thu, 29 Jan 2015 09:38:20 -0500 https://reprap.org/forum/read.php?1,116114,462383#msg-462383 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,462383#msg-462383 miscsolutions.wordpress.com].]]> dc42 General Thu, 29 Jan 2015 08:01:06 -0500 https://reprap.org/forum/read.php?1,116114,462335#msg-462335 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,462335#msg-462335
i've made my 1st 3D printing machine in single nozzle...

Can one help in programming side for making dual nozzle dual extruder 3D printer.]]> jeeva djiva General Thu, 29 Jan 2015 05:57:20 -0500 https://reprap.org/forum/read.php?1,116114,192515#msg-192515 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,192515#msg-192515

The printer is a HUGO (PrintrBot clone). The Hotend is a "V3" from Reprap-fab.org
Firmware is Repetier 0.81 with Slic3r and RepetierHost


Achim
]]> jsturm General Sat, 16 Mar 2013 11:47:29 -0400 https://reprap.org/forum/read.php?1,116114,189323#msg-189323 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,189323#msg-189323 -------------------------------------------------------
> I've done some experimenting with limonene and
> HIPS, and have not have very good results,
> unfortunately
>
> Limonene takes forever to dissolve HIPS, and
> mostly just makes it gummy. It's also a pain to
> wash off the part (and is somewhat expensive.)

[www.adafruit.com]
So it takes a day minimum?]]> karabas General Sun, 03 Mar 2013 17:43:54 -0500 https://reprap.org/forum/read.php?1,116114,181715#msg-181715 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,181715#msg-181715 If you'd like to merge the changes to the mainstream, that would be great.
I was planning to do from the start, check the comments here:
[github.com]]]> dob71 General Sun, 03 Feb 2013 14:08:40 -0500 https://reprap.org/forum/read.php?1,116114,181714#msg-181714 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,181714#msg-181714 Some might find this of interestMendel
trustytrev:)]]> trustytrev General Sun, 03 Feb 2013 14:06:30 -0500 https://reprap.org/forum/read.php?1,116114,181695#msg-181695 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,181695#msg-181695
#define EXTRUDER_OFFSET_X {0.0, 21.68} // (in mm) per extruder, offset of the extruder on the X axis
#define EXTRUDER_OFFSET_Y {0.0, 0.64} // (in mm) per extruder, offset of the extruder on the Y axis

Are you the creator of this? I see that you have added many changes to the X2 MARLIN release. I also see Bernard was the original creator and has not update this for quite some time.

Do you have all the changes that you made in order to allow the statements above to work? I would like to intergrate them into the current MARLIN firmware.

I have a dual head printer that I have been printing with for some time. I want to actualy use them at the same time now to print support material or print two colors. My last item is the offset issue.



RepG40
Skeinforge50
Firmware MARLIN as of 2-2-2012

Jeff]]> Adventure General Sun, 03 Feb 2013 12:53:43 -0500 https://reprap.org/forum/read.php?1,116114,181575#msg-181575 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,181575#msg-181575 Try [github.com] (to clone run "git clone -b m git://github.com/dob71/Marlin.git")
The instructions are here: [www.okob.net] and README.md in the code.
Setting the offsets are done in the configuration using EXTRUDER_OFFSET_X and EXTRUDER_OFFSET_Y
defines or using M208 command. Example: "M208 T0 X0.00 Y0.00", "M208 T1 X20.00 Y10.00" is equivalent of
#define EXTRUDER_OFFSET_X {0.0, 20.00}
#define EXTRUDER_OFFSET_Y {0.0, 10.00}
in the config.

Readme excerpt about extruder change:
T_num_ [F_num_] [S_num_] - changes the extruder. The feedrate might be set to reposition the extruder and specify at what speed. If "F" is not present the coordinates are adjusted, but the move is not performed. "S" allows to choose what E position the just selected extruder should start from (_num_ - the extruder number to pick the last position from). If "S" is not specified the last known position for the new selected extruder is used. For example, if Skeinforge generates support using absolute coordinates and you want it to be printed using extruder 1 while the object is printed using extruder 0, use "T1 S0" to start support printing and "T0 S1" to go go back to the object printing. Alternatively, If you have gcode for extrider 0 and 1 generated separately and then mixed just use T0 and T1 to switch between the extruders.

I'm not aware about compatibility with RepG.
You can try X2SW bundle. The info is here: [github.com]
This has everything bundled in. The available slicers are slic3r and Skeinforge. The frontend UI is Pronterface. Everything is modded for using dual extruder machines (when it asks you what profile to use after the install, pick one under "RepRap/X2" and use as a the starting point).

Another thing to try is using Slic3r with your current firmware. Slic3r has options for extruder offset.]]> dob71 General Sun, 03 Feb 2013 02:30:58 -0500 https://reprap.org/forum/read.php?1,116114,181573#msg-181573 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,181573#msg-181573
My problem right now is my offsets. I tried to add this to the support_start and the support_end file. I have The following:

this is the start

T1
G1 X-20 F5000

This is the end

T0
G1 X+20 F5000


I am trying to move it to the left when T1 is activated and move it to the right when T0 is activated.

What is happening is it is trying to go to -20 coordinates or +20 coordinates.

So what I need is the ability to Add +20 to the gcode or -20 to the gcode/

Has anyone figured this out?

I am running RepG 40 and Skeinforge 50 with the latest MARLIN firmware.

I see that Makerbot puts their offset in the Machine.xml file. I have also read about it being in the firmware. I have not seen this in MARLIN yet. And the last place is to put the code in skeinforge…

Thanks

Jeff]]> Adventure General Sun, 03 Feb 2013 01:52:49 -0500 https://reprap.org/forum/read.php?1,116114,140747#msg-140747 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,140747#msg-140747 Njones General Sun, 01 Jul 2012 02:59:04 -0400 https://reprap.org/forum/read.php?1,116114,140732#msg-140732 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,140732#msg-140732 [www.okob.net]

I still can't get PVA to print reliably (10-15min max and a piece of it plugs the nozzle and since it is soft extrufer grinds through it), so not sure how adjusting the temperatures will work for PLA+PVA printing.]]> dob71 General Sat, 30 Jun 2012 23:25:55 -0400 https://reprap.org/forum/read.php?1,116114,140433#msg-140433 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,140433#msg-140433 -------------------------------------------------------
> The next version of Slic3r will contain some basic
> support for dual extrusion. Full support is in my
> plans :)

Awesome! I am currently printing and assembling my dual extruder :)]]> NewPerfection General Thu, 28 Jun 2012 13:04:02 -0400 https://reprap.org/forum/read.php?1,116114,140419#msg-140419 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,140419#msg-140419 Sound General Thu, 28 Jun 2012 11:10:05 -0400 https://reprap.org/forum/read.php?1,116114,139836#msg-139836 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,139836#msg-139836
The experiments with lowering temperature didn't give any good results yet. Too much is leaked while the temperature is being adjusted. I'm planning to either print a small parking object that would be used to plug the nozzles and stabilize the flow after extruder change or just lower the nozzles down to the platform level. Maybe that will make it work better.

Switching to smaller nozzles might also help.]]> dob71 General Mon, 25 Jun 2012 16:20:00 -0400 https://reprap.org/forum/read.php?1,116114,139821#msg-139821 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,139821#msg-139821

Do you have retraction set for the extruder tool change? Use
3-5 mm retract which will have to be set in the extruder tool change gcode area]]> Japica.comcom General Mon, 25 Jun 2012 15:26:43 -0400 https://reprap.org/forum/read.php?1,116114,139457#msg-139457 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,139457#msg-139457 Even better way would be to cover the nozzles whille adjusting the temperatures, but that requires a little hardware mod.]]> dob71 General Sat, 23 Jun 2012 22:42:02 -0400 https://reprap.org/forum/read.php?1,116114,139453#msg-139453 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,139453#msg-139453 brnrd General Sat, 23 Jun 2012 21:14:11 -0400 https://reprap.org/forum/read.php?1,116114,139410#msg-139410 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,139410#msg-139410 I'd rather spend time merging everything and have the multiple extruder code in the standard Marlin, but I'm not sure they have high priority for the multiple extruders feature of maybe just don't have hardware to test it on. They are probably working w/ Ultimaker, at least that seems like what was the main target for the firmware in the first place.

BTW, I'm testing another set of changes (not yet pushed). One of them is for M109 option to wait for all extruders to reach the target temperature. The latter is for experimenting with lowering the idle extruder temperature. I'm hoping it can help solve the PLA leaking from the idle hotend that becomes a big problem when extruder has to be idle for a long time and then print a very small feature. Did anybody try something like that?]]> dob71 General Sat, 23 Jun 2012 13:45:35 -0400 https://reprap.org/forum/read.php?1,116114,139409#msg-139409 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,139409#msg-139409
Thanks guys

[www.youtube.com]]]> japica.com General Sat, 23 Jun 2012 13:39:52 -0400 https://reprap.org/forum/read.php?1,116114,139404#msg-139404 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,139404#msg-139404


dob71 Wrote:
-------------------------------------------------------
> Did you try the existent dual extruder Marlin
> firmware mod (X2) with the replicator?
> [github.com]
> I've been printing with it for a while and it is
> pretty solid. It might save some time. If there is
> any compatibility issue I can probably fix it
> prety fast.
>
> BTW, there is now a GUI frontend for the script
> merging G-code files in the sofware bundle for the
> dual extruder X2 machines:
> [github.com]]]> Adventure General Sat, 23 Jun 2012 12:38:40 -0400 https://reprap.org/forum/read.php?1,116114,139392#msg-139392 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,139392#msg-139392
Basically I am using Printrun with special made buttons in the program to control the dual heads. I can upload a video of the dual head printing, but it works great. The only thing I need to figure out now is getting just the support material to print on the second head.

The firmware is Marlin v2. It is very easy to set up. Use Ramps to control the two extruders. Cura can slice files for the Dual head, and they are close to slicing the support for the second extruder.

Probably will set up a Youtube for the videos. Will get back to ya'll in a few]]> Japica.com General Sat, 23 Jun 2012 11:43:06 -0400 https://reprap.org/forum/read.php?1,116114,138298#msg-138298 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,138298#msg-138298 [github.com]
I've been printing with it for a while and it is pretty solid. It might save some time. If there is any compatibility issue I can probably fix it prety fast.

BTW, there is now a GUI frontend for the script merging G-code files in the sofware bundle for the dual extruder X2 machines:
[github.com]]]> dob71 General Sun, 17 Jun 2012 15:17:37 -0400 https://reprap.org/forum/read.php?1,116114,138282#msg-138282 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,138282#msg-138282
So far in ReplicatoG I have been able to display two heads, two tempatures, one heat bead.

I have my toolheads built as follows in my .xml file (See attachment)

In Marlin RC2 I have set the following under Configuration.h

RAMPS 1.4 = 34 (Power outputs: Extruder0, Extruder1, Bed)

#define MOTHERBOARD 34

#define TEMP_SENSOR_0 7
#define TEMP_SENSOR_1 7
#define TEMP_SENSOR_2 7
#define TEMP_SENSOR_BED 7

#define HEATER_0_MINTEMP 5
#define HEATER_1_MINTEMP 5
#define HEATER_2_MINTEMP 5
#define BED_MINTEMP 5

#define HEATER_0_MAXTEMP 275
#define HEATER_1_MAXTEMP 275
#define HEATER_2_MAXTEMP 275
#define BED_MAXTEMP 150

I have set the following under Configuration_adv.h

This defines the number of extruders
#define EXTRUDERS 2


The issues that I am seeing is that I am unable to register a temp for Toolhead0.

Toolhead1 works Shows temp
HBP works Shows temp

When I turn on the temp for toolhead0 LED4 comes on.
When I turn on the temp for toolhead1 LED3 comes on.
When I turn on the temp for HBP LED2 comes on.

T0 T1 and T2 are for the temps.

When I have a single head programmed in the firmware #33 profile. T0 and T1 works.

With a dual, I am only getting T1 and T2 to work.

I have looked over the PINS.H file and all looks to be correct.

My other issues is that under control panel in repg 34, It has both left and right extruders listed under control panel. I can get Toolhead 1 to move its extruder, but when I try Toolhead 0, Toolhead 1 moves instead of Toolhead 0


I am close here. I just need to get the correct motor to turn and the temperature to register for T0

You can download my firmware here using replicatorg.

[thefutureis3d.com]

I just started working on this. Once I figure it all out I will share it with the community.

Thanks]]> Adventure General Sun, 17 Jun 2012 13:55:36 -0400 https://reprap.org/forum/read.php?1,116114,134632#msg-134632 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,134632#msg-134632 Anonymous User General Fri, 25 May 2012 15:50:22 -0400 https://reprap.org/forum/read.php?1,116114,134625#msg-134625 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,134625#msg-134625 www.okob.net]
There is a short description of the process on the "Printing" page: [www.okob.net]]]> dob71 General Fri, 25 May 2012 15:06:38 -0400 https://reprap.org/forum/read.php?1,116114,134615#msg-134615 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,134615#msg-134615 Andrew Diehl General Fri, 25 May 2012 14:23:10 -0400 https://reprap.org/forum/read.php?1,116114,134612#msg-134612 Re: Is Anyone doing research into dual head RepRap?8-) https://reprap.org/forum/read.php?1,116114,134612#msg-134612 Entropy General Fri, 25 May 2012 13:51:28 -0400