Changing the extrusion letter for the second extruder

sn0w1995

Hello,

I am relatively new to working with Duet3D and have a question:
My slicing program generates two different letters for the extrusion for the dual extruder, for example:

Extruder 1: G1 X1 Y1 E2 F1000

Extruder 2: G1 X1 Y1 U2 F1000

Unfortunately, the printer only works with the E letter for extrusion. Is there a way how I can also use e.g. the U as extrusion letter in the firmware for the second printer?

Thanks in advance for your help!

deckingman

@sn0w1995 said in Changing the extrusion letter for the second extruder:

Hello,

I am relatively new to working with Duet3D and have a question:
My slicing program generates two different letters for the extrusion for the dual extruder, for example:

Extruder 1: G1 X1 Y1 E2 F1000

Extruder 2: G1 X1 Y1 U2 F1000

Unfortunately, the printer only works with the E letter for extrusion. Is there a way how I can also use e.g. the U as extrusion letter in the firmware for the second printer?

Thanks in advance for your help!

Nope. "U" is used as an additional axis. What slicer are you using that generates extruder moves as non"E" values?

sn0w1995

@deckingman said in Changing the extrusion letter for the second extruder:

@sn0w1995 said in Changing the extrusion letter for the second extruder:

Hello,

I am relatively new to working with Duet3D and have a question:
My slicing program generates two different letters for the extrusion for the dual extruder, for example:

Extruder 1: G1 X1 Y1 E2 F1000

Extruder 2: G1 X1 Y1 U2 F1000

Unfortunately, the printer only works with the E letter for extrusion. Is there a way how I can also use e.g. the U as extrusion letter in the firmware for the second printer?

Thanks in advance for your help!

Nope. "U" is used as an additional axis. What slicer are you using that generates extruder moves as non"E" values?
Thanks for the quick reply.
I use Aura2 from Anisoprint.
Would it be possible to use, for example, A or B or another letter for the second extruder instead of the "U"? Then I could just replace the U manually in the generated G-code?

deckingman

@sn0w1995 said in Changing the extrusion letter for the second extruder:

@deckingman said in Changing the extrusion letter for the second extruder:

@sn0w1995 said in Changing the extrusion letter for the second extruder:

Hello,

I am relatively new to working with Duet3D and have a question:
My slicing program generates two different letters for the extrusion for the dual extruder, for example:

Extruder 1: G1 X1 Y1 E2 F1000

Extruder 2: G1 X1 Y1 U2 F1000

Unfortunately, the printer only works with the E letter for extrusion. Is there a way how I can also use e.g. the U as extrusion letter in the firmware for the second printer?

Thanks in advance for your help!

Nope. "U" is used as an additional axis. What slicer are you using that generates extruder moves as non"E" values?
Thanks for the quick reply.
I use Aura2 from Anisoprint.
Would it be possible to use, for example, A or B or another letter for the second extruder instead of the "U"? Then I could just replace the U manually in the generated G-code?

Nope. A and B are also used for additional axes. Essentially, any letter that isn't reserved for some other purpose can be used as an additional axis but not as an extruder. You can have pretty well any number of extruders but they must in the form E0, E1, E2 etc.

deckingman

@sn0w1995 For a dual extrusion system, the usual way to deal with it is to use different tools. Assuming you have a two in one out system, then you could use something like......

M563 P0 S"Extruder0" D0 H1
M563 P1 S"Extruder1" D1 H1
If you like you could also combine both inputs and have 3rd tool such as
M563 P2, D0:1 H1
then set the mixing ratio using M567

P0 would be tool 0, and P1 would be tool 2. D0 is the first extruder as defined in your M569 and D1 is the second extruder. H1 is the hot end heater which, in the above example is common all tools.

Then your slicer only needs to generate "normal" G1 X,Yn,En commands but will switch between extruders but inserting the appropriate Tn command to change tools and thus extruders.