Thingiverse
Dual X-Carriage Bukobot 3D Printer by buildrob
by Thingiverse
Last crawled date: 3 years, 1 month ago
Do you have problems with filament ooze on your dual extruder prints? Perhaps this idea might help you.
This page describes the adaptation of a Bukobot Duo (Original 2012 Version) by Deezmaker to have two x-carriages which can be driven independently instead of the normal single x-carriage with two extruders. The change allows you to park the inactive extruder and prevent it from oozing onto the print when the other extruder is active.
In addition to improving dual-extruder printing, the firmware for this design has also been extended to allow you to print two copies of the same object at once (with the heads printing at an arbitrary position and temperature offset). This doubles your printer's output in this case. (see video below)
Advantages of separate x-carriages:
The inactive extruder can be parked when not in use.
The inactive extruder can be easily capped when parked to prevent runout/ooze (which makes restarting the print more accurate).
Each x-carriage is almost half the weight which allows higher print speeds with less backlash.
The x-carriages can duplicate one another allow two copies of an object to be printed at one.
support for the specification of a Z height offset between the extruder hot ends (if your extruders are not identical).
[One other technique some people have used to overcome this problem is to cool the inactive extruder below the oozing temperature at every tool head change. However this massively increases the print time as the printer must wait for the extruder to reach operating temperature at each extruder change,]
Short video of operation: http://youtu.be/BHHAHQsAeuA
Demo of Duplication Mode: http://youtu.be/Mdj5iZ5B2Dg
Tour of printer: http://youtu.be/jAfktjeuPZ4
Picture of original Bukobot Duo here: http://bukobot.com/_detail/buildrob-wiring.jpg
The above awesome dragon print model is by tbuser (here: http://www.thingiverse.com/thing:29088 ). The Ocotpus print is by moleofproduction I've also added links to other 2 color models I've printed in the comments below.
This page describes the adaptation of a Bukobot Duo (Original 2012 Version) by Deezmaker to have two x-carriages which can be driven independently instead of the normal single x-carriage with two extruders. The change allows you to park the inactive extruder and prevent it from oozing onto the print when the other extruder is active.
In addition to improving dual-extruder printing, the firmware for this design has also been extended to allow you to print two copies of the same object at once (with the heads printing at an arbitrary position and temperature offset). This doubles your printer's output in this case. (see video below)
Advantages of separate x-carriages:
The inactive extruder can be parked when not in use.
The inactive extruder can be easily capped when parked to prevent runout/ooze (which makes restarting the print more accurate).
Each x-carriage is almost half the weight which allows higher print speeds with less backlash.
The x-carriages can duplicate one another allow two copies of an object to be printed at one.
support for the specification of a Z height offset between the extruder hot ends (if your extruders are not identical).
[One other technique some people have used to overcome this problem is to cool the inactive extruder below the oozing temperature at every tool head change. However this massively increases the print time as the printer must wait for the extruder to reach operating temperature at each extruder change,]
Short video of operation: http://youtu.be/BHHAHQsAeuA
Demo of Duplication Mode: http://youtu.be/Mdj5iZ5B2Dg
Tour of printer: http://youtu.be/jAfktjeuPZ4
Picture of original Bukobot Duo here: http://bukobot.com/_detail/buildrob-wiring.jpg
The above awesome dragon print model is by tbuser (here: http://www.thingiverse.com/thing:29088 ). The Ocotpus print is by moleofproduction I've also added links to other 2 color models I've printed in the comments below.
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